Partial Source: The Pro Wrestling Torch
As reported earlier, Rob Van Dam has decided not to accept WWE's renewal offer, so the presumption is he is leaving when his contract expires at the end of August. Anything can still happen though.
The breaking point was when they began to waffle on how much time off they'd be giving him. He wanted a chunk of time off this year - six-plus months - and a limited schedule otherwise. He may be jobbed out soon to try to lower his value to TNA if he signs there, which is likely.