I wish that the studios would stop playing the nostalgia card and just come up with their own titles. X-COM was... well X-COM. It had it's "Lore" as described through UFOPedia, it had it's rules. This is nothing like X-COM and i don't even mention the FPS approach, do not care about that part. Call it Alien Defence, UFO Attack, Wierd Blocks From Space Forming Fancy Shapes Mid Air: The Game, but leave X-COM out of it.
The trailer also doesn't appeal to me at all, the brief gameplay flashes aren't really promising nor the visuals are worth the "oooooh"-reaction. Seems bit bland all in all. Maybe the E3 will bring some revelation but, personally, not holding my breath. Plenty of other interesting games on horizon that don't try to abuse old titles.