Here is the latest rumors on flyers beyond the first wave.
Please remember that these are rumors, and are to be taken with a grain of salt.
via Stickmonkey
Wave 1 in june is as bow has revealed. But i am expecting the de bomber before end of summer along with a tau and chaos sm flyer. The csm flyer is likely w the codex so the other two may have "something" with them.
The tau flyer as ive heard from 3 sources is named after a snake, not a fish. Has a networked marker light like item/weapon that can stack. 4 missiles. Options for rail guns or some gattling cannons. No transport.
Orks still have another flyer that is ready for release. And its in the codex.
Eldar get nothing until their codex. As others have stated.
Tyranids harpy has been done fore some time, but its looking like itll be held onto for a while longer. Rumor is another nid wave release with the spore later...
Harpy was designed as a dual kit, but i havent seen the final version. It was supposed to make a ground based unit as well.
It doesnt make sense because of that to be a "flyers" kit release. Plus they have additional finecast characters done and the new redesign of one unit i still cant reveal.
Deffkoptas are 3 to a box with all options. They are bigger than the box set versions. But not by much.