I wonder if they'll fix the music... By "fix" I mean remake the tunes to be in stereo. The original seems to play at a low bit-rate anyway.
Also, apparently there were some missing or unfinished stages (along with music for said missing stages). I wonder if they'll be added? Or maybe accessed via some in-game secret?
The price they're wanting for it seems a bit high for a "retro game". But when you've got the only way to obtain it legally without the board/machine I guess you can (almost) ask whatever you want for it.
And of course there'll be bonus material. I'm just curious about how much 'bonus' will be related to gameplay.