I just ordered the Atari 2600 version.
I don't really like consoles, but since the 2600 version has updated graphics and DF mode MP, I couldn't resist.
I understand the DRM is different though. It is simple enough. All we have to do is hold the game cartridge in front of web cam and then capture the image while you insert the cartridge into the machine.
When you see a smiley face appear on your PC screen, you can then launch the game on the Atari.
Oh yeah, if you order the 2600 version today, you get all the planes for FREE too