Matt has set up a thread asking people to subscribe – when 2.1 starts going out he’ll update the thread and E-Mails will be sent out to subscribed members. Our own Phases set up the same thing on AndroidForums so if you’ve already got an account with AF that might be easier. Either way you’re sure to know when 2.1 starts dropping.
But hey… not like the forums won’t light up as soon as people start getting the option to download, right? At least this will help deflect any “false alarms”.