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Figured I would put all upcoming trailers/manga/news about Arise on one page All articles are in English except the youtube pages where I found the trailers.

Trailers:
[link] (first released trailer)
[link] (second, short trailer)
[link] ('opening')
[link] (Third trailer)

Manga:
[link]

From what is seems like, the series will be released in Japan in June. As to when it will reach the US, I haven't found a date for that yet.

The Anime News Network site has a lot of articles and I picked out a few that are worth a read. You should check out more of what they have

[link] (new characters)
[link] (race car)
[link] (some new character designs plus the third trailer, as above, along with a bit of story about the series)

That's all I've found for now