So it begins in earnest?
By the looks of things, this commit signals the start of bringing all focus to 2.8 (even though it is still a branch). The UI changes at least (the ones that will break tutorials) are starting to come in as we speak
The purpose of this thread is the same as the ones for 2.5, 2.6x, and 2.7x (meaning it follows its development and any major debates over certain aspects should be in separate threads instead).
Take it away...
EDIT: 2.8 builds are now being worked on (check the Blender buildbot page).