From the press releases, I'd actually contest that, although I won't know for sure until the game actually comes out. It seems to me the only Difference is that they've made a main character, as opposed to your team entirely consisting of random douche bags off of craigslist or where ever you purchased them from. and that the combat is in said main characters view, so yeah the game plays in first person, as a tactical shooter, instead of being turn based. From what i've heard research and base building, are still intact as far as I'm aware. Leading to an interesting divergence from the older games.

the core element of suspense in the face of the unknown still appear to be there, and perhaps even a little more so, considering you're not piloting black Clint Eastwood, but more Mulder from X-Files.

If you really love the old game that much, install it again, buy it off of steam, buy the UFO games, treat this game like it's aiming to be, a re-imagining for a younger generation that only knows halo and call of duty.