So far I'm quite interested in getting 8.1 on my RT for performance tweaks and additional functionality like Outlook RT and the sound recorder, though I haven't kept up with the news bits. But in skimming one article about it (I refuse to install the preview version, meh), one tidbit really stood out: Ummm.... I really hope there's an option to disable this, though if there isn't I expect someone somewhere to create a hack. Disabling autoupdate is the first thing I do for any software installation, including the registry hack on my RT*, or have my firewall block it. I always read all the release notes for update notifications in the app store right now before deciding whether to go ahead and update or uninstall (e.g. if something decided to add ads, or user comments about a new version are mostly complaints). *There are lots of legit patches for Winstuff, but I prefer letting updates stew a bit to maturity before manually installing anyway. A very recent MS update would've killed a game I play, for example, but it didn't install on my machine. I think MS ended up pulling that update completely.