It's clearly just a boxset of each season of The Next Generation. This will be the third time TNG has been grouped together in a Complete Series boxset release - first was the Borg-cube shaped boxset, then the long grey box (both of these had the hard case plastic sets inside), then there was the green 20th anniversary edition. All of these are long out of print, so this release is just a new package. Looks like TOS and DS9 are also coming out in matching Complete Series packaging, with the rest to follow.
I wouldn't expect any more than just a repackage, the discs'll be the same ones already out, and I wouldn't be surprised if this wasn't just the slimline cases inside a box.
It looks a damn sight better presented than the last boxset that was released, and it actually looks a canny size for the larger series cases. Let's just hope and prey it has all the bonus features as the above reviewers have mentioned, i would be very disappointed if it didn't.