The Wikimedia Developer Summit is an event with an emphasis on the evolution of the MediaWiki architecture and the Wikimedia Engineering goals for 2016. Last year the event was called the MediaWiki Developer Summit.
As with last year the event took place in the Mission Bay Center, San Francisco, California. The event was slightly earlier this year, positioned at the beginning of January instead of the end. The event format changed slightly compared with the previous year and also included a 3rd day of general discussion and hacking in the WMF offices. Many thanks to everyone that helped to organise the event!
I have an extremely long list of things todo that spawned from discussions at the summit, but as a summary of what happened below are some of the more notable scheduled discussion moments: