I thought this meant it would be released tomorrow or something.
You've waited this long. Like I said, optimistically it should be before Friday. I doubt highly that Microsoft really goes through every bug that Obsidian/Bethesda has checked off as "fixed" to ensure it is indeed fixed, this would take a long time for every game that gets patched and require a massive staff. Their certification process is likely accepting the patch from various test machines, ensuring that each game boots and is playable, and signing off on it.
Your best bet, if you're interested, is to search out how long the time was between Fable 3's patch being sent to Microsoft for certification, and when it actually was available on machines. Fable's bug list was fairly large and included a few save corruption issues too, and everyone's claiming that every other company has been more forward with information than Bethesda/Obsidian has been, so, that information should be trackable.
