So far, I've been having a blast. My hope is that VC will get a fully-realised ToW release soon, which would very much tempt be back to the forces of Darkness... (The other ones...) ^v^
I think we'd all love to see this, but unless/until there's another management shake up at GW it seems unlikely, as the current pattern of rigidly enforced separation of product ranges reeks of executive interference. But hey, Warriors of Chaos got to be an exception due to how fundamental they are to Warhammer, and the persistent presence of Vampire Counts in the Old World competitive scene - whether because the army is just that popular or because their pdf rules are just that strong - has got to be signalling to GW that there's demand there.
If anything happens on that front it's probably still more than a year away though. In the mean time we have the PDF rules (which are pretty good actually), the AoS models (likewise pretty good overall), the Square Based Renegade pack, and various homebrew arcane journal projects