Released on January 22nd, 2021md5sum
The list of major changes is described on Piwigo 11.0.0 release note
11.x Dashboard, Fatal error: Allowed memory size
escaped word `groups` can't be unserialized
[11.x] Parse error: syntax error, unexpected '['
[11.x admin/intro] popen() has been disabled for security reasons
Syntax error in Norwegian language file after upgrading to Piwigo 11
"Infinite loop?" error when going on page 2 of albums
admin/batch_manager.php some errors/warnings on php7.4
[11.x] incorrect download code for upgrade
Norwegian Bokmål (bokmål)
Brazilian Portuguese (Português Brasil)
We recommend the automatic upgrade. If you're running version 2.2+, Piwigo will tell you which plugins may be not compatible with Piwigo 11 before upgrade.
If you're running Piwigo 11.x you can also download the 11.x_to_11.1.0.zip archive that contains all new and modified files. Once you have extracted the files, transfer them onto your web server with a FTP client over your Piwigo 11.x installation. No database upgrade is required.
If you are running a version older than 11 and do not want to use the automatic upgrade, then follow the manual upgrade.