I don't know if this would be better suited in Fan projects, as it is technically a re-working of Metroid 2 in a new program with GBA graphics, and an actual map. I never played the original so I can't say how it's different, but I'm guessing the data scans and logbook was added which is a nice touch so far,.
All info about it here, also start the betting for how long it takes Nintendo to offer a C&D
https://metroid2remake.blogspot.co.uk/
I don't think it counts as a ROM since it is them releasing their work in a whole new format to the original, but as it's based off another IP copyright laws might get a bit iffy, so take it down if need be.
Also stuff on Fed Force if anybody's got it yet, I'm waiting another 2 weeks or so to buy it but it would be interesting to see what other people's experience is with it.