The fact that online streaming site Crunchyroll had a larger booth at Anime Expo than most of the anime companies present is really telling of the times we live in today. At their panel, Crunchyroll announced the simulcasts that they got lined up for the Summer season. Naruto Shippuden, Shugo Chara, GinTama, Shangri-La, Reborn, Saki, Hayate, Chi's New Address, & Kaasan will all continue to show new episodes every week. Time of Eve will also continue, with episode 5 going up just this week.
In terms of brand new shows, the yuri series Aoi Hana already started streaming last week. Besides that, three new series were confirmed as well. Kanamemo, Yoku Wakaru Gendai Mahou, & Charger Girl (Fight Ippatsu! Juden-chan) are all new for the Summer. Kanamemo has already started, & the other two will be added shortly. I'm not sure what the holdup is since both of them have already begun airing in Japan, & they can't really be considered simulcasts if they're not even streamed in the same week. & Juden-chan on Crunchyroll? I can't believe they'd show such a perverse anime series on their site. On the other hand, they did stream Strike Witches last year. But on the other hand, Strike Witches didn't have girls erotically peeing themselves in every episode.
Source:
http://www.animenewsnetwork.com/convention/2009/anime-expo/crunchyroll