Well, that's closer than iView: I could probably live with it if the only wrinkle is that midnight has to be 00:xxAM vs. 12:xxAM. Not bad for a beta version.
The only problem with leaving the m's in the EPG times is, that leaves fewer characters for the show title on the right, which was already pretty short even with 24-hour times with no AM/PM at all. (These screens have to be readable even on the composite output, so the number of characters across is going to be rather limited.)
On the closed captions, I've never understood why this has been so tough to get right. On the older 7816-based boxes, I understand they had it working during time-shift, but if you tried CC during playback it would just curtly flash "Invalid" at you. Then the 7802-based boxes came out, and we found CC now worked during playback - but didn't work during time-shift any more!
And with the latest versions, they managed to break it in both cases
You'd think they could combine code from the old 7816 boxes with code from, say, V5.3, and get CC working everywhere.
There's also a bug involving DD 5.1, but you'd have to own an AVR to test it.
As for that midnight bug, that one has existed since the very first boxes. I'd love it if they could finally fix that, but I'm not holding my breath.