Not release yet, probably a right issue. Not a great explanation, but it's the same thing with the 6 million dollars man at least you got a region 2 release.

Thanks for the details Skip

From what I understand is that Warner Bros. owns the character through DC Comics, but Fox owns the film from the 1966 series. Until they can reach an agreement with each other, its gonna be awhile. TVShowsonDVD.com had story about this almost 2 years ago, when Anchor Bay issued "Return to the Batcave," which supposedly only had footage from the movie. It kinda makes you wonder how licensing works, since Fox can release the Batman movie on DVD, but yet, we can't have the tv series.

Here is  an except from Dave Lambert's Blog "DVD Guy" from TVGuide.com:
Late '60s Batman starring Adam West: This is a no-brainer to bring up, as it has been the longest-running, most well-known case of ownership issues keeping it off of store shelves. A lot of you compared the Bionic stuff to Batman, and you're right: one studio owns the rights to the characters/concepts, and another studio owns the film/episodes, and they can't reach agreement. But in Batman's case, it could also be more complicated than that!       

¤ We know, from all the years of wrangling, that Fox owns the episodes, and it's been said that "Warner" owns the characters. Be careful, though, because it's not an issue at Warner Brothers (as in the studio), it's at Time Warner-owned DC Comics. If you click on that Cold Case link above and scroll to the "No rights for:" section, and see the second item there, Warner Home Video was very clear on that in an online chat at the Home Theater Forum back in March 2005).         

¤ In August 2006, the daughter of show producer William Dozier filed a lawsuit claiming Fox owes the heirs of Greenway Productions money that was never paid, and that she is entitled to $4.4 million.
       
¤ Do you remember all the great guest stars that showed up, as a villian or even for a 5-second cameo popping out of a window while Batman & Robin walk up the side of a building? There would have to be clearances for all of those.

        ¤ Of course music rights issues with the well-known theme song would have to be considered.

        ¤ It may surprise you, but then there are also rights issues concerning the design of the unique Batmobile design used in the show, and possible a separate issue regarding some of the costumes as well!

Whoa, does everyone want a piece of this Bat-pie? Well, it's easy as a fan to be critical of folks holding their hands out and wanting money that keep you from enjoying your show on DVD. But let's face it, if you were in their shoes and you owned those rights, you would want to be compensated for it too. It takes a long time to sort all this out. That's what's keeping Batman off your shelves! Still, how does the 1966 theatrical film get onto DVD? Or a reunion show like Back to the Batcave, filled with clips (and the Batmobile)? Or a "clip show DVD" like Batmania? Well, the rights to all of those are handled differently, due to separate and differently-worded contracts. So each can be handled individually, allowing some items to move forward while others are held up (seemingly forever).

Meanwhile you'll have to satisfy yourself with this.