diff --git a/Containers/nextcloud/entrypoint.sh b/Containers/nextcloud/entrypoint.sh
index 796f3cd0..1b9f8d90 100644
--- a/Containers/nextcloud/entrypoint.sh
+++ b/Containers/nextcloud/entrypoint.sh
@@ -250,6 +250,21 @@ DATADIR_PERMISSION_CONF
             # unset admin password
             unset ADMIN_PASSWORD
 
+            if [ "$INSTALL_LATEST_MAJOR" = yes ]; then
+                php /var/www/html/occ config:system:set updater.release.channel --value=beta
+                php /var/www/html/updater/updater.phar --no-interaction
+                php /var/www/html/occ app:enable nextcloud-aio --force
+                if ! php /var/www/html/occ -V || php /var/www/html/occ status | grep maintenance | grep -q 'true'; then
+                    echo "Installation of Nextcloud failed!"
+                    touch "$NEXTCLOUD_DATA_DIR/install.failed"
+                fi
+                php /var/www/html/occ config:system:set updater.release.channel --value=stable
+                php /var/www/html/occ db:add-missing-indices
+                php /var/www/html/occ db:add-missing-columns
+                php /var/www/html/occ db:add-missing-primary-keys
+                yes | php /var/www/html/occ db:convert-filecache-bigint
+            fi
+
             # Apply log settings
             echo "Applying default settings..."
             mkdir -p /var/www/html/data
diff --git a/manual-install/update-yaml.sh b/manual-install/update-yaml.sh
index 7d2446a1..fad25bc3 100644
--- a/manual-install/update-yaml.sh
+++ b/manual-install/update-yaml.sh
@@ -83,6 +83,7 @@ sed -i 's|COLLABORA_SECCOMP_POLICY=|COLLABORA_SECCOMP_POLICY=--o:security.seccom
 sed -i 's|NEXTCLOUD_STARTUP_APPS=|NEXTCLOUD_STARTUP_APPS="deck twofactor_totp tasks calendar contacts"        # Allows to modify the Nextcloud apps that are installed on starting AIO the first time|' sample.conf
 sed -i 's|NEXTCLOUD_ADDITIONAL_APKS=|NEXTCLOUD_ADDITIONAL_APKS=imagemagick        # This allows to add additional packages to the Nextcloud container permanently. Default is imagemagick but can be overwritten by modifying this value.|' sample.conf
 sed -i 's|NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS=|NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS=imagick        # This allows to add additional php extensions to the Nextcloud container permanently. Default is imagick but can be overwritten by modifying this value.|' sample.conf
+sed -i 's|INSTALL_LATEST_MAJOR=|INSTALL_LATEST_MAJOR=no        # Setting this to yes will install the latest Major Nextcloud version upon the first installation|' sample.conf
 sed -i 's|=$|=          # TODO! This needs to be a unique and good password!|' sample.conf
 
 cat sample.conf
diff --git a/php/containers.json b/php/containers.json
index 6096733b..c5b606b6 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -161,7 +161,8 @@
         "TRUSTED_CACERTS_DIR=%NEXTCLOUD_TRUSTED_CACERTS_DIR%",
         "STARTUP_APPS=%NEXTCLOUD_STARTUP_APPS%",
         "ADDITIONAL_APKS=%NEXTCLOUD_ADDITIONAL_APKS%",
-        "ADDITIONAL_PHP_EXTENSIONS=%NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS%"
+        "ADDITIONAL_PHP_EXTENSIONS=%NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS%",
+        "INSTALL_LATEST_MAJOR=%INSTALL_LATEST_MAJOR%"
       ],
       "restart": "unless-stopped",
       "devices": [
diff --git a/php/src/Controller/DockerController.php b/php/src/Controller/DockerController.php
index dd417b27..5f4acfe3 100644
--- a/php/src/Controller/DockerController.php
+++ b/php/src/Controller/DockerController.php
@@ -154,11 +154,19 @@ class DockerController
             $port = 443;
         }
 
+        if (isset($request->getParsedBody()['install_latest_major'])) {
+            $installLatestMajor = 26;
+        } else {
+            $installLatestMajor = "";
+        }
+
         $config = $this->configurationManager->GetConfig();
         // set AIO_URL
         $config['AIO_URL'] = $host . ':' . $port;
         // set wasStartButtonClicked
         $config['wasStartButtonClicked'] = 1;
+        // set install_latest_major
+        $config['install_latest_major'] = $installLatestMajor;
         $this->configurationManager->WriteConfig($config);
 
         // Start container
diff --git a/php/src/Data/ConfigurationManager.php b/php/src/Data/ConfigurationManager.php
index f734e1d1..07eb7078 100644
--- a/php/src/Data/ConfigurationManager.php
+++ b/php/src/Data/ConfigurationManager.php
@@ -677,6 +677,14 @@ class ConfigurationManager
         }
     }
 
+    public function shouldLatestMajorGetInstalled() : bool {
+        $config = $this->GetConfig();
+        if(!isset($config['install_latest_major'])) {
+            $config['install_latest_major'] = '';
+        }
+        return $config['install_latest_major'] !== '';
+    }
+
     public function GetAdditionalBackupDirectoriesString() : string {
         if (!file_exists(DataConst::GetAdditionalBackupDirectoriesFile())) {
             return '';
diff --git a/php/src/Docker/DockerActionManager.php b/php/src/Docker/DockerActionManager.php
index 81a312b1..96767352 100644
--- a/php/src/Docker/DockerActionManager.php
+++ b/php/src/Docker/DockerActionManager.php
@@ -348,6 +348,12 @@ class DockerActionManager
                     $replacements[1] = $this->configurationManager->GetNextcloudAdditionalApks();
                 } elseif ($out[1] === 'NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS') {
                     $replacements[1] = $this->configurationManager->GetNextcloudAdditionalPhpExtensions();
+                } elseif ($out[1] === 'INSTALL_LATEST_MAJOR') {
+                    if ($this->configurationManager->shouldLatestMajorGetInstalled()) {
+                        $replacements[1] = 'yes';
+                    } else {
+                        $replacements[1] = '';
+                    }
                 } else {
                     $secret = $this->configurationManager->GetSecret($out[1]);
                     if ($secret === "") {
diff --git a/php/templates/containers.twig b/php/templates/containers.twig
index ecafbd00..b539ac42 100644
--- a/php/templates/containers.twig
+++ b/php/templates/containers.twig
@@ -26,6 +26,8 @@
         {% set isWatchtowerRunning = false %}
         {% set isBackupOrRestoreRunning = false %}
         {% set isApacheStarting = false %}
+        {# Setting newMajorVersion to '' will hide corresponding options/elements #}
+        {% set newMajorVersion = 26 %}
 
         {% if is_backup_container_running == true %}
             {% if borg_backup_mode == 'backup' or borg_backup_mode == 'restore' %}
@@ -250,6 +252,12 @@
                     {% else %}
                         {% if is_mastercontainer_update_available == false %}
                             Your containers are up-to-date.<br><br>
+                            {% if newMajorVersion != '' && isAnyRunning == true %}
+                                <details>
+                                <summary>Note about <b>Nextcloud {{ newMajorVersion }}</b></summary><br>
+                                    If you haven't upgraded to Nextcloud {{ newMajorVersion }} yet and want to do that now, feel free to follow <b><a href="https://github.com/nextcloud/all-in-one/discussions/2208">this documentation</a></b><br/>
+                                </details><br>
+                            {% endif %}
                         {% endif %}
                     {% endif %}
                 {% endif %}
@@ -287,7 +295,16 @@
                                 <input class="button" type="submit" value="Update mastercontainer" />
                             </form>
                         {% else %}
-                            {% if was_start_button_clicked == false or has_update_available == false %}
+                            {% if was_start_button_clicked == false %}
+                                <form method="POST" action="/api/docker/start" class="xhr">
+                                    <input type="hidden" name="{{csrf.keys.name}}" value="{{csrf.name}}">
+                                    <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">
+                                    {% if newMajorVersion != '' %}
+                                        <input type="checkbox" id="install_latest_major" name="install_latest_major"><label for="install_latest_major">Install Nextcloud {{ newMajorVersion }} (if unchecked, Nextcloud {{ newMajorVersion - 1 }} will get installed)</label><br>
+                                    {% endif %}
+                                    <input class="button" type="submit" value="Download and start containers" />
+                                </form>
+                            {% elseif has_update_available == false %}
                                 <form method="POST" action="/api/docker/start" class="xhr">
                                     <input type="hidden" name="{{csrf.keys.name}}" value="{{csrf.name}}">
                                     <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">