Originally Posted by: Laumania ApS 
And when you say "active" forum members, is there a list to put your name on, or will I get an email just by writing this? :)
It means people with 100+ posts or that have committed code or helped testing before. Also people that have won previous contests.
Soon after everyone can test it out as well (with a Marketplace account).
About Emulators: We currently have not finished work on our emulators, in fact our iOS Emulator was last updated in 2010, so we need to fix up some stuff first. It is however possible to test out the different emulators with the build service on Windows (just no look and feel of emulators, just the graphics api mostly). That is how I tested most of the new graphic and content improvements last week.
Using the Android SDK Emulator is also completely useless like I have mentioned in several other posts, it is just too slow for anything serious. It is also a pain to work with (you can deploy your .apk you get from the build service, it works, but it won't be fun).
We could also support the iOS Emulator on MacOS, but that is not really useful IMO. We have not done so since 2010 as well and no of the game teams sees any advantage testing it there. It is either the real device for usability testing or just using Windows.
So in short: Testing is currently Windows only, deploying is only with a Marketplace account and iOS/Android Add-Hoc only (you can however use certificates for the AppStore, but we would not recomment it ^^).