It has been, but in a weird way.
Whatever A-Map 2011 does with data is screwy. Not to mention I did rush to finish it by September.
So you're not REALLY missing out. (But it is an original storyline. Without the stupid usual reusing teams/taking over the world ****. True facts.)
Good news: I'm remaking it, with better maps, better organization, more creativity, and better presentation. It has a day/night system (thanks to a tool lololol), and more attention to detail. (Raining at different times, snowing actually having an effect on the city's look, etc.) In fact, it's so well organized any newbie could look at the ROM and see how everything works. No maps malfunction, since I never change anything in 2011 A-Map, and any errors created I'm experienced to fix. It might also have music hacks, and some asm. We'll see.
Bad news: It won't be out until probably June.