More than a few sources are talking about this. And the Mazda forums are talking about it too. Even NASIOC has a thread on there about it.
2017 Mazda RX-7 will be based on extended version of MX-5 chassis to allow for small back seats(likely not usable). 300HP Rotary engine Non turbo
. But they said they might provide a turbo version later on. Priced around $30,000 to compete with Nissan 370z.
I have always been a fan of the FC and FD RX-7.
I hope all these sources are true:
GoAUTO
TopSpeed
MotorReport
etc.