Well I think quite a few of us around here suspected this for a while but now it's confirmed; Intel is killing AppUp.
If you've published with them they'll probably send you the same email I got but for those who hadn't joined, here is the link to the
online version.
Unless I've misunderstood, the long and the short of it is that on 1st November, they'll stop accepting new apps to the store. Shortly after, and before the end of the year, they will take down all apps using the AppUp SDK. Although no date has been given, one can only assume that the store itself will close some time in the new year.
So there we go. I'm glad I didn't invest £120 in a new code signing certificate now!! Anyhow I thought you guys should know in case you didn't receive the email directly.