Def Jam 4

Is Def Jam 4 really in production I hope it is if anyone knows anything about it's release date please let me know I've been waiting for so long now and I'm still waiting. I've been a faithful fan to the def jam series since it began with Vendetta and I'd like to say out of the entire series I love Fight For NY the best. I've been playing fight for ny for nearly 4 years now I think it's about to go on the forth anyway. I love everything about fight for ny and if their making a forth def jam game then they need to make it alot like FFNY just alot better with alot of fighters. I'll be honest here I don't care for Icon at all I hate the game I even bought it to see if I'd like it I beat it like twice and then sold it and I'm still playing FFNY. I consider myself a true def jam player. I know nearly everything there is to know about def jam fight for ny so does any know of any confirmed info at all like release dates or confirmed fighters anything please.