After uploading the app via adHoc deployment I see this message on the iTunesConnect. "TestFlight doesn’t support apps with Watchkit extension" Does anyone have a idea why this is shown and what is the solution?
Looks like Apple TestFlight is not yet ready for WatchKit apps. You can temporarily disable WatchKit extension inclusion by deleting this row from main iOS app General Settings:
The only way is via old school Ad Hoc or enterprise signing (and HockeyApp)
There is currently no solution, WatchKit apps cannot be distributed over TestFlight yet. I would estimate it will be enabled sometime after April 24 once the Apple Watch is released.
来源：https://stackoverflow.com/questions/29460048/testflight-doesn-t-support-apps-with-watchkit-extension