Apple has just released version 10.5.1 of iTunes, which has been in testing with developers for some weeks to test the new iTunes Match music service. iTunes 10.5.1 is available now on Apple’s website and Software Update. It’s still unclear whether iTunes Match will open to the public today, and we’ll update this story as soon as we know more.
Update: It appears iTunes Match is indeed launching today as confirmed by Apple on the iTunes webpage.
Screenshots from the iTunes 10.5.1 installer and iTunes 10.5.1, still showing iTunes Match as “beta”. More information about iTunes Match available here.