got 22.35 last night. woot.
i wasn't having issues with HDMI sync anyway, so that part wasn't a life changing experience for me, but i will say the EPG (electronic program guide) seems WAY more responsive.
haven't made any determination about whether my banding issue was improved but a quick look makes me think not.
true, i get a noticeable flicker whenever i select almost any menu or guide option, but overall the experience is greatly improved. 22.35, big win.