Any guestimate on how soon is soon? I'm about to wipe out my Windows 7 partition and install Windows 8 with a clean copy of VS 2012, but seeing as I'm not in a particular hurry, I'd prefer to install VS 2012 with SP2 from the start, rather than install VS 2012 and update it very, very soon. But if "very, very soon" is more than a month, then I probably won't wait for it.
Very, very, very soon. Like now even. You can download the RTM release of Update 2 today, and the IDE will start notifying people who've missed it starting next week.