This time last month rumours were suggesting that a Blu-Ray release for "Cowboy Bebop: The Movie" or "Cowboy Bebop: Knockin On Heavens Door" (if you want the Japanese Title) would be getting a US Release in june, and these rumors started with IMAGE ENTERTAINMENT listing the product on its website.
However recently Amazon USA & Planet Axel (formly Axel Music) have listed the film as available to pre-order and given it a confirmed release date of 28th June 2011.
Further information suggests that Cowboy Bebop: The Movie Blu-ray has been given a RRP of $17.99, however Amazon US are currently listing the Blu-Ray at $12.99 - which in my opinion is an amazingly cheap price.
No information regarding the Blu-Rays region coding at this point, or even if a UK Blu-Ray release is possible - but as soon as i find out what Region information it is ill post it up.
As mentioned previously you can pre-order Cowboy Bebop The Movie from either Amazon US or Planet Axel now, but while your waiting why not check out the original english trailer for the movie below: