On Tuesday, before watching the keynote, I upgraded my iTunes library to have all iTunes plus songs:
20 total songs makes my iTunes music library totally DRM free.
As you can see, I was not a strong purchaser of DRM-infested music. And while some are angry at having to re-pay just to get rid of something that shouldn't have been there in the first place, I'm happy to get rid of the DRM and get higher quality to boot.
-Andy.