It seems fixed now, or at least my app's channel feature started
working.
I agree with Bay, that there should be more test coverage / status
reporting. I've been defending GAE even with the recent price increase
drama, but it's getting hard with a 9 hour outage addition. My main
defense of the price increase is that I don't have to worry about
servers breaking down and I can sleep easily. However it turns out
that stuff doesn't get fixed in a reasonable amount of time and what's
worse, there's a minimal amount of communication from Google on what
the hell is actually going on.