when are amd going to be releasing a new line of cpu because i want to know as im very much thinking in building a whole new pc with the current amd pII x6 black edition
If you mean desktop CPU, there's still a little while to go. There's no reason not to go for that build you have in mind, especially since if you keep waiting for the 'new line of CPUs' then you'll be waiting forever.
Bulldozer is expected Q2 but i wouldnt hold your breath. An X6 system would do great justice over your current system. If you do decide to upgrade anytime soon lmk, cause id be interested in buying that 4200+ if its 939.