Of course not. First of all, you're limited to the maximum map size of CryEngine, which is set in stone until they get double precision in. And at this point, I am certain CIG does not have the neccessary know-how to do that, and since July Crytek doesn't have the manpower anymore. Not that they would've done that even if key personnel hadn't quit, since this is a massive undertaking.
So that leaves us with the standard level box, which means ground excursions are going to be much like Mass Effect and/or Star Trek Online. That doesn't neccessarily mean that it's not worth playing, but you can hardly call that "planetary exploration" if you are basically limited to a typical FPS shooter map size. They can still make this worthwhile to play of course, but I guess they'll limit themselves to a couple of rooms that represent a base or city, separated of course by loading screens and whatnot. Creating game assets is what they're best at, so they'll stick to their guns and churn out high quality models that will form ground locations you'll be able to visit. Perhaps some of these models are going to be used in a modular fashion, i.e. reused in different configurations so as to allow more different locations to be visited. We shall see.
I've long since said goodbye to the "seamless" part alluded to in the Kickstarter. That's what I'm hoping for in ED.
Please David, don't pork this up! You're our only hope!