The AngularJS guys have since modified their plans a bit: https://docs.google.com/document/d/1dZdq2L8EkzimgvU93ypLF9GJ...

TL;DR: they're dedicating team members to continue working on 1.X while they build 2.0. They're also planning out a migration strategy for anyone on 1.X when 2.0 launches