You should check out some internet wrestling sites for that info. here's what i can tell you so far..
there's no set date yet for wcw to come back on the air.
As for some of the werestlers, well, some had huge multi million dollar contracts from time warner/aol, and most are just going to ride out their contracts for the next 2 years instead of accepting lower contract amounts from mcmahon. makes sense. Goldberg will be one of those sitting home. Booker t supposedly will be coming to the new wcw even though he'll be taking almost a million dollar a year cut in pay. A bunch of others are going to I think either ohio valley wrestling, or memphis, where the wwf's "mino leagues" are. they're going to brush up down there for a while till the writers decide some storylines for them in the wwf, cause some are going to wwf and some to wcw as of now.
Big poppa pump, may or may not come back to wrestling, the wwf says that they are interested, BUT they say he's too muscular and possibly too prone to injury. that and they say that his size will lead too many people to think that the wwf is just full of juiced up monsters and they don't want that sort of image.
Also, rob van damme might be coming over, he's been talking to JR about possible business deals.