Apple quietly released iTunes 10.2.1 today; just about a week after 10.2 was released – in preparation for iPad 2 that’s going to be available at US Apple Stores on March 11. Meanwhile, @musclenerd had confirmed on his Twitter that iTunes 10.2.1 is also safe for jailbreaking:

“Today’s 10.2.1 iTunes is safe for JB+UL, like last week’s 10.2 (fast release!) Even keeps new http://is.gd/qv6wpv feature” – @musclenerd
Note: AFC2 is an acronym for AFC (Apple File Connection) version 2 which is a service that runs on every iPhone / iPod, which iTunes uses to exchange files with the device. It is jailed to the directory /private/var/mobile/Media, which is on the second (non-OS) partition. (courtesy of theiphonewiki) He also confirmed that it still supports downgrading to earlier firmware (IPSW) as long as you have your SHSH saved on Cydia (Saurik’s server).
Download iTunes 10.2.1 for Windows [78.4MB] or Mac [77.4MB].