There is a CD available for FM12. You have to use Steam to activate it. Will they change it later on for FM12, probably not as the cost would probably be to high. Will they change it for FM13? Who knows. SI will obviously be deciding whether Steam has been a success or not.
You have to download the editor separate from the game and you can get that from Steam.
Hmm. I've heard that in the US it's almost impossible to find a physical copy in the shops. For buying a disc online (via Amazon or whatever) you'll probably pay way over the odds. (It's $20 more expensive than a digital download)
Steam is honestly your best option. Or emigration. It really depends how badly you want a physical copy.
I'm on a mac, used Steam last year for fm 11. Steam has problems whether you have Mac or PC. Honestly, this crapload on making everyone use Steam is not cool. As consumers I think we should have the right to decide whether we want a hard copy or want to fiddle around with Steam. Maybe SI needs to create its own third party instead of Steam. Anyway, demo for fm 12 works fine, no crashes, just I can't play with sound on, since after a game is over I still hear the crowd noise. I don't understand it- you spend thousands of hours and dollars testing these things, and yet they still knowingly release these games with a multitude of bugs. How lazy can you get? Luckily FM has on of the most dedicated forum/fan bases out there that I've seen who spend hours trying to get things right and give out facepacks, kitpacks, logo packs, etc.