I know people suggest to follow the announcement here but a better way to handle for business owners would be to have a newsletter signup and as soon as the software is released, we got notified right away.
It surely beats checking out the forum every X days.
Back when I first got my Droid from Verizon last year, they had a niffy website that gave you quick specs on it, and then had an email list you could sign up for that was only used to inform you of the Droid's release.
They did the same type of thing when the Droid X and Droid 2 came out.
I think something like that for you guys would be great. There are a lot of people from vB , IPB and other forum companies that are hearing about you and waiting and I think this type of area/page would give you a great list to mail when the time comes to start selling.