You can now automatically detect a user language from emails. This means that if a user, who does not have a language preference, sends in an email, we will detect the language using the email's text and set that language on the user's profile. For more details: https://support.zendesk.com/entries/20712342
We saw some performance issues around rule management pages (Trigger, Automations, etc). We implemented some more efficient queries to boost performance.
Team Leader roles were not able to moderate some forums content. This was not intended and access has once again been opened up.
Yahoo uses a non-standard forwarding header known as X-Yahoo-Forwarded. This was not being picked up by our mail processor, which meant some email features were not functioning correctly. This is now fixed.