I submitted the achievement list but I probably did it incorrectly as I noticed the Admin sent me a FR to compare. Aww.
Anyway, to get the game early, go here:
It seems to be random whether it tells you to "check back for a code" or whether it's ready to give you the demo XBL code.
I got the code earlier today and was able to unlock the full version.
I loved it on my phone so it was really nice to be able to play this beautiful version.
The music and visuals are so much better.
There are also two Avatar Awards. The submission process seems complicated so I'll wait for them to be posted by someone else.
1. ilmilo t-shirt (male and female) - complete 3 levels
2. ilo and milo avatar toy - complete a full memory
I got them both but they don't seem to work yet in the Avatar Marketplace.