Actually I think that when the door opens again it'll be a bit of an anticlimax.
Your house isn't going to change. Your paid house is still there. There are no moving boxes.
Game mechanics don't change.
The only difference is that crafting and harvesting, etc, will accumulate imagination points instead of XP points. There will probably be 'I' quoins instead of 'XP' quoins.
There is a limit to what you can spend your imagination on, since housing isn't changing yet.
There may be the 'deal the cards for a character upgrade' bit, and some character skill / attribute shuffling.
All in all I don't think the world will look that much different. Some counters and their associated numbers will change.
Well I tried to get online 5 mins before the game closed and couldn't even get in for the party so I went shopping, bought a grow-your-own chilli plant which is now on my windowsill and had a coffee, but now I'm back and definitely forum-stalking :)
ETA: oh yes and I got beer and snacks to celebrate when it reopens :)
Ugh, I keep trying to read but I keep flipping back to refresh the Glitch page! I need to make myself take like an hour nap, maybe imagination will be back on when I wake up :)