Early Access to the PC Beta (for those who preordered or otherwise acquired a code) begins today at 10AM Pacific Time (3AM for us Australians).
The beta includes 1 Story Activity (1 Player), 1 Strike/PvE Activity (3 Players) and 2 Crucible/PvP Activities (4v4 Players). Both beta and retail game are region-limited in the same way as Overwatch (your game copy and player data are the same between regions, but your friends lists are different).
Reminder of the default control scheme:
My Battle.Net is McJobless#1805, in the North America region. Feel free to add me if you need a free carry.