Today Crunchyroll announced the new shows that will be simulcast for the new Spring anime season. The shows are:

Reborn! (aka Katekyo Hitman Reborn!)
Shangri-La
La Corda d'Oro ~primo passo~ and ~secondo passo~
Chi's Sweet Home and Chi's Sweet Home - A Second Home
Peeping Life (Official Website)
Mainichi Kaasan

Some of these are older shows that are ongoing or that have new seasons, and which Crunchyroll is showing for the first time.

Continuing simulcasts are: Naruto, Gintama, Shugo Chara! and Shugo Chara!! Doki, Time of Eve.
Crunchyroll announced a lineup of Korean dramas as well.

UPDATE: Crunchyroll says the above is just Part 1 of their announcements, that they have more in the coming weeks.
UPDATE 2: Crunchyroll has announced on April 9 that they will also be simulcasting this season Ristorante Paradiso. Also, Thursday, April 9, 2009 the double-header of Naruto Shippuden Episodes 103 and 104 was aired! Episode 103 was available for everyone at 3:30 AM PDT (GMT-7) and Episode 104 for Anime Members at 4 AM. If you watch Episode 103 within 72 hours of it launching, you are automatically entered in a raffle to win an exclusive autographed Naruto poster. They are giving away 5 of them to randomly selected winners. The poster will be signed by Junko Takeuchi, the voice actor for Naruto!

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Source: Crunchyroll Official Forum
Source: Crunchyroll Official Forum - update
Source: Crunchyroll Official Forum - update