I don't have the DVD but it was released on the same day, with the same sleeve art, as the BD. If the BD's extras are SD, it'll be the same. In fact, even if they're not SD it''ll be the same, but still...
As I recall, the BD's subs are optional, but I'll confirm on both points very shortly. I just lent it to a friend, which is what prompted me to look up if any 'better' versions had been released since I bought it. Thankfully they haven't, as the UK BD appears a notch below. Upgradeitis is a curse.