Yes sadly just iPhone for now. I heard about a new android SDK coming out that sounds promising in the future though.
I'm not sure if there are any iphone emulators on windows or not, I have one that came with my iphone sdk but it costs $90.
This looks like it has an emulator http://www.genuitec.com/mobile/
but I'm not sure, never tried it. I'll do some more looking, it would be awesome if everyone who doesn't have a device could play my game.
And for those of you who do have an iphone or ipod touch I'd really appreciate your 5 star rating when the game comes out!