Shopware Major Version 6.6 released

Hey folks,

Shopware Major Version 6.6 was released. Thanks to everyone who contributed during the RC phase, you are awesome!

Keep in mind this is a major release. It contains breaking changes. This is also the first major release after announcing the new release policy - you may want to read about this in case you are not aware.

Shopware is focused on increasing performance and laying the foundation for features in the next minor versions, apart from the usual improvements.