Mearls has posted it HERE. I'm still cautiously optimistic about the upcoming version of Dungeons & Dragons. The notes in this article at least show that they are listening to the playtest results. I think the Thief fix is great, though Thieves still need adjustments for combat.
The update is pretty short on details, unfortunately, so it's still a wait-and-see situation. I hope WotC manages to publish the best edition of D&D ever, though.