Just got this little gem regarding Microsoft Flight in my inbox:
The Microsoft® Flight team is excited to announce that we are now accepting applications to our beta. To apply for the beta:
1. Make sure you have a LIVE Gamertag. To sign up for the Microsoft® Flight beta, you will need a LIVE Gamertag. If you don't already have one, you can get your LIVE Gamertag here.
2. Opt in to stay informed. We are in the process of integrating our newsletter with Xbox LIVE®. To make sure that you receive the upcoming news and information about Microsoft Flight, be sure to opt in to receive marketing emails when you sign up for your Gamertag. If you already have a LIVE Gamertag, review your opt-in preferences to make sure you're receiving marketing emails.
3. Fill out your application on Microsoft Connect. Beta invitations will be sent out in early January 2012. While we will try our best to include as many of our interested users as we can, completing the beta application does not guarantee an invitation to the beta program.