I clean-installed Mountain Lion 10.8.0. Now I am at 10.8.2 and I want to do a clean install again. If I boot to the recovery partition and do a restore, will I have 10.8.0 or 10.8.2? Does the recovery partition get updated when OS X gets updated?
The Recovery Partition does not get updated. Once the partition is created, OS X Recovery downloads the latest of your OS X version from Apple.
Extracted from Apple's About OS X Recovery:
Reinstalling OS X Lion or OS X Mountain Lion via OS X Recovery requires broadband access to the Internet via Wi-Fi or an Ethernet connection. OS X is downloaded over the Internet from Apple when OS X Recovery is used for reinstallation.
Yes, the local recovery partition is updated when you upgrade your OS. Whereas Internet Recovery will download the original OS version that came with your Mac.