According to several sources close to the situation, Ric Flair has indeed quit Impact Wrestling, and he basically just stopped showing up to events. The assumption at this point is that he's going to sign a WWE Legends deal and help fill time on the new TV network. Flair has energy drink and lottery endorsements to fall back on, too.
Additionally, WZ has learned that Alex Shelley quit TNA as well. Apparently WWE will fill extra TV time with, among other things, a Cruiserweight division and/or tag teams, and are looking for smaller wrestlers by way of stocking either, or both. While it has not been confirmed, Shelley will likely go to WWE. There has also been talk of WWE running a Cruiserweight show on the new Network, which could also be a possibility for Shelley.