I'd be curious if they were able to implement a live view LCD without making the standard viewfinder uselessly small and dim. (Though this camera seems aimed a lot more at sports photographers than the ones who'll be doing still life/macro photography.) It sounds like it might just be a normal viewfinder but in live mode, it behaves like a PnS in webcam/movie mode and just shows the "movie" video live on the LCD.
That's certainly well within the range of current camera brains; the new Sony PnS sensor that can record 2921x2184 resolution at 60fps is certainly proof of that (I'm sure the "live view" is much less resolution than that, probably native LCD resolution even when output over USB).
Frankly, I'd be a lot more interested in having the ability to record a decent-quality movie video on a DSLR than have a live LCD view, although I suppose you'd pretty much need the latter to get the former. But again, that's not a feature that the target audience cares much about, either.