I did receive that mail from Pottermore yesterday (and by now I have 3 - can't wait for the rest of them to arrive, haha).

Got my old name, House and wand back. But you can't even share your profile, so it's all a bit pointless. No games (except when you haven't done the House and wand tests yet or do them again), no interaction with other users - meh.

I did find a few new images (not new-new - just illustrations that have already been on the old Pottermore, but now they're in delicious hi-res) though and added them to my collection.

Now I'll make a 2nd accound and take the tests, because I'm curious about what they look like now.