Just saw this, it seems like engineers worked on routers have been redeployed to other teams:
http://appleinsider.com/articles/16...ision-apparently-signaling-the-end-of-airport
I have been thinking for some time that it is strange for Apple not to have release an AC version of the airport express and not to have updated the airport extreme after 3.5 years (previous update cycles have been quite shorter), so I tend to think this rumour makes sense.
If this correct I will regret the AirPort product line. I like those products very much as for me they have been very stable, and their compact size combined with internal antennas and power supply makes them much sleeker and tidier than "regular" routers in my opinion.
If this is going forward I would also wonder what the plan is for Time Machine. The technology was released alongside the Time Capsule and while it works Apple never really promoted its use with third-party hardware. If the Time Capsule is going, Time Machine might follow the same route in a future release of macOS (and I wouldn't be surprised if Apple tried to push a new iCloud online backup service as an alternative, which might or might not please Time Capsule users).