Many thanks to John Dulaney, who's taken on the task of Test Day co-ordinator for Fedora 17. He's put up a post announcing the F17 Test Day cycle and explaining how to propose a Test Day (it hasn't changed at all, so if you're used to the process, go ahead and do it the usual way). So if you're interested in proposing a Test Day for Fedora 17, please see John's post and follow the instructions therein! Thanks.