– Home Video release is on March 12, 2010 on BluRay (US and Japan).
No information of a DVD release at this time.
– 1st Episode is titled “Day of the Unicorn” (“Unicorn no Hi”)
– 1st Episode will premiere in a limited theatre run in Japan on Feburary 20.
– Region 1 BluRay Release will have English and JP Audio tracks plus 5 subtitle tracks in Japanese, English, French, Spanish, and Chinese.
Lastly, any information on Gundam Unicorn can be found in the Information Archive.
NOTE: This does NOT have to do with the Gundam 00 Movie, which has its own info dump.
Source: Anime News Network