3035583 was an optional one by default. The 2nd version of 3035583 wasn't and 2952664 on w7 isn't either. It's marked as recommended and will install with normal updates. It did for for me on w7.
@roadworker: i like the fact that they are offering it for free too, but i DONT like the fact HOW they are doing things. Force a downloader down our throats, without speficially telling that in the kb description? That doesn't sit well with me. You also can't disable that tray icon without uninstalling the kb. I'd much rather see a clear description in the respective kb's, offer the splash screen ONCE and give the option to not show it again and disable the tray icon. For the ones that DO want it, i'd rather see a followup email with a link to the iso download or something than downloaded files immediately.
Though we don't actually know yet WHAT the downloader will download, an iso or just update files. It's just HOW they are doing things that i don't like.