are all these people/companies/blogs, etc just guessing? I am so disappointed. I've delayed rooting just to get the update....
Just go ahead and root. When the update comes out I guarantee you will be able to download and install the update as a ROM. It will be the exact same software as the OTA, only with root. Honestly you'll get it faster this way, you have Titanium backup/etc that makes the update process much safer and you will have root. With any OTA update, there is no certainty that there will be a root method after the update.