This appears to be Bava's first appearance in high definition, at least in an English friendly form, and it is a good choice. Bay of Blood (Twitch of the Death Nerve) is a classic proto-slasher that directly inspired Friday the 13th among thousands of other similar films. No word yet on special features, but Arrow has never skimped in this area so I'm not concerned. Another area where they excel is packaging. I don't yet have any of their Blu-ray releases, but I have seen their edition of Day of the Dead, and it is outstanding! 4 different cover art panels on that one and this one is supposed to have the same, at left is the first.
Arrow Films' presentation of Mario Bava's Bay of Blood appears on shelves November 2nd in the UK. Arrow typically releases region free Blu-ray packages, so let's hope this one follows that trend.