SCEA senior producer Harvard Bonin just announced on the PlayStation.Blog that Starhawk will transition into open beta starting next Tuesday, January 17 for PlayStation Plus members. This is also the same day that private beta participants can play, so long as you didn't erase your original private beta files, that is.
Two weeks later, January 31, those with vouchers from purchasing Uncharted 3 can finally redeem them. Finally, on February 21, the Starhawk beta will be completely open, allowing anyone on PlayStation Network to play. If you don't want to wait that long, and don't have a voucher, the PlayStation.Blog also mentions that visiting GameStop and PlayStation on Facebook on February 7 could provide the opportunity to join the fray a bit earlier.
For an in-depth look at how Starhawk's private beta went, check out our interview with Harvard Bonin.