The Ultra Boost Uncaged LTD is up for preview now on the UK site with an expected release date of July 16th. Colors shown for this set include the white as well as the black with black Boost and red with red Boost. This will be the first time another color has been used on the Boost material besides the original white. Other stores such as Finish Line also have these colors on the release calendar for the 16th so it looks like they will be available in other stores as well.
Keep an eye on the Ultra Boost Uncaged page where you can sign up for release updates. Also follow adidas Running Twitter for updates.