WOW. New pokemon? No wonder my psychic senses tingled and told me to come visit this board today. o_o I looked through all the sprites, but...I wish I had actual pictures. I voted for Shemi because that was the first one I matched up from Serebii.net's pokedex to the name listed here, and it's really cute. But now I see the legendaries just start with #480 and go in order. I think. Well, my REAL favorites are definitely #483 "Diaruga"/Dialga and #488 "Kureseria"/Crecelia (according to serebii.net). 483's neat, and 488 is...real perdy. =D That's my favorite. Looks like I'm the only one so far.
I was looking for potential new favorites among the rest of the sprites too; I remember when I saw the Manectric sprite and knew instantly it was my new favorite. Well...Tamanta is pretty adorable. I love rays.
And among others, #405 ("Rentoraa" according to Serebii.net), and especially #470 ("Leafia") and 471 ("Glacia") look very interesting to me. I can't wait to see more.
Don't know if any of my current faves will be replaced though.