The lmited editon comes with...I think they called it a Castaway Collection.
One thing that hasn't been announced is what, if anything special, one gets if they get the Origins digital download version only (this isn't to be confused with the Limited Edition).
Heh, someone gets me the physical limited edition, but to get the origins only stuff I had to make a second account for it. Shame they don't really stuff separate.
Pets had a cat/dog costume pack, Supernatural had some decor from Plants vs. zombies, Showtime had a radio, and Seasons had shark/little bee costume, University the school spirit pack, etc.
Sometimes I wish they did a bit more back compatibility with other previous packs. For example, making unique drinks for the newer occult types ala Mixology (from Late Night)...
I would love a dolphin companion if they made use of Pets, for example.
Also, was it me, or was there a brief blurb about 'Playing with Krakens' in the text sequence at the end of the video? Of course, I expect it to be rabbitholed or something, but still.
I am not much on the business stuff, but the exploration definitely has me jazzed. I loved that part of World Adventures...
Of course, mermaids. The more, the merrier. I know someone decided to get Sims 3 because of the promise of mermaids (and the unicorns in Pets helped
).