So the BARBARELLA Blu-ray is scheduled for release in the USA on July 3rd. But disappointingly the only extra is going to be the trailer, same as the DVD release - at least it'll be in high definition. The feature audio is mono, making this pretty-pretty much a 'bare bones' release. What I'm still hoping for is a decent high-definition remastering to make the film look the best it ever has!
Source: The HD Room