Yes! The seiyuu casting list for the upcoming Fate/Stay Night anime is out! Check over at ANN, but I’m also posting the listing here with my quick comments on each.
Ayako Kawasumi as Saber
Seriously, I did not think of Ayako as a choice for Saber in my mind. For me, she can only work as Saber if going the deep sexy voice route. I don’t think any other ways will work, though hearing Saber sound like Miharu from GIRLS Bravo or Fuu from Samurai Champloo might give a few surprises. 
Jun’ichi Suwabe as Archer
I can see this actually, coming from the man who has voiced Sting from Gundam SEED Destiny. Glad they decided to get separate voice actors for Archer and Shirou. Could have gotten very weird otherwise (though if it did happen, I guess he would have to go a similar route like Yukana did for Mai-HiME).
Kana Ueda as Rin Tousaka
*dances my triumph dance* I was pinpoint on this one! I don’t know, but when I was thinking of possible seiyuus for the cast of Fate/Stay Night, Kana Ueda popped in my head for Rin. I’m hoping for something similar to how Kana handled Tominaga from Sensei no Ojikan. Being the bossy type seems to work for Rin
Miki Itou as Fuji-nee
I have to admit, I’ve never gotten through Maria-sama ga Miteru. So I can’t really say whether I’ll like or dislike Miki Itou as Fuji-nee. Should be fun though since Fuji-nee is a lot of comedic relief!
Noriaki Sugiyama as Shirou Emiya
Same opinion as about Fuji-nee. I only know him as Ishida Uryuu from Bleach. I think, however, Noriaki will most likely do a fine job considering he has already been in two major anime series in his somewhat limited career so far.
Noriko Shitaya as Sakura Matou
Saber better not start hitting on Sakura! Himeko Kurusegawa from Kannaduki no Miko, Noriko I can somewhat see as Sakura. Sort of fits in similar characteristic traits but we’ll see when the anime actually airs.
Jouji Nakata as Kirei Kotomine
It’s Jouji Nakata, do I really need to say anymore? 
Now for the hard part, actually waiting for the anime to be made 
EDIT: Stupid people at ANN better get their information right before posting! Thanks to Momotato for clearing up the misunderstanding.