I'm really out of the loop when it comes to the Gundam Unicorn OVA that is coming out this year. So was surprised to find out that Volume 1 of the DVD is available on March 12 this month on a world wide release schedule. This means that it will already have English version in it.
The first episode was made available by Bandai for preview online. I couldn't watch it because of country restrictions. If you are resourceful enough and good with "the google" you can find a copy of it online. *wink*