Right, gave it a watch, and man, concept-wise, it looks like Michel's got what he's wanted. If memory serves, he always did want to have an element of space exploration, but couldn't do it with the original, and thus we only got that scene when you fly to Hyllis' moon. Being able to fly around like he's demonstrated sounds pretty fun indeed.
That being said, part of me is a little worried about the sandbox element. It feels like we're reaching a point of fatigue with the prominence of the sandbox genre. I trust Michel to do it well, we wouldn't be here if it wasn't for all the many games he's helmed, but I can't help but feel a slight twinge of anxiety. Obviously it's just early days, we have very little idea of what the meat of the game will hold, so I guess time will tell.
Finally, given the tech, I'm wondering how true those Switch exclusive rumours are now...heck, part of me wonders if the Switch will be capable of running it at all.