Yeah!!!!!!!!!

there are two full waves pending release:
1. Tyranid wave (Harpy, Harrier, Tyranid Warriors, Mycetic Spore and reinvented rules for Pyrovore as anti-air unit)
2. Dark Eldar wave (Void Raven, Grotesque unit with expanded options, Sliscus, Sathonyx and Vect (on foot)).
There was a third wave planned for the guard (Thunderbolt, Hydra, armoured veterans, Storm Troopers) but it was postponed into oblivion because the Thunderbolt didn’t get approved.
Four more fliers in the pipeline: renamed Eldar Nightwing (finished), Tau Copperhead (finished), and a medium sized Space Marine and a large Ork flyer.
There are upgrade packs for Space Marines and an Ork flakk trakk / buggy and a kopta box in the pipeline, but seem further off than the other flyer themed waves.
A daemon flyer (or swooping) wave is even more far off. All waves may come without a codex. I don’t know when or in which order these are released.

there are two full waves pending release:
.
Four more fliers in the pipeline: renamed Eldar Nightwing (finished),