Atago of the Takao-class has been confirmed to be in the upcoming anime.
She's much slender than her official art from the game.

EDIT : Also, it seems that Kitakami and Ooi will be in too
http://livedoor.blogimg.jp/lovelive2015-kantai/imgs/6/3/63654f95.jpg

firechikara said:She's much slender than her official art from the game.

I would call it Proportional.

And another one has been confirmed, it's Ooyodo this time:
http://livedoor.blogimg.jp/lovelive2015-kantai/imgs/0/0/00fed1ce.jpg

Oh, she's not ridiculously big like the in-game official arts.

Imminent Pan-pa-ka-paaaan~

And still no confirmation for Tenryuu :(

Frawnkenstein said:

And still no confirmation for Tenryuu :(

We still have time :)

For Hiei's fans, rejoice because she's been confirmed to appear too!
http://livedoor.blogimg.jp/lovelive2015-kantai/imgs/9/7/97491930.jpg

And a new official picture (but it's a sample), I have no idea what they're advertising for (just scroll down for a bit to see the picture).
http://fury-movie.jp/news/