Clearedtoreenter; No. The WAAS GPS in this new product is just a blind position sensor. It's role is simply to provide the ADS-B with a higher integrity GPS position to broadcast. Non WAAS/FDE sensors are deemed insifficiently reliable in the mandate. WAAS is completely superfluous for navigation in this part if the world.... But we still have to pay for it.
Are we talking integrity or accuracy here? FDE is integrity WAAS is accuracy. While they may come in the same package you don't need WAAS for FDE.
All the info I read says WAAS GPS, which to me means you need WAAS to be ADSB compliant. Perhaps I've read it wrongly.
By the way I have heard WASS (SBAS) might be coming our way.