For the second time this week, Apple has released a new version of their iTunes software. 10.2.1 was made available for download but the documentation of the changes in the program has not been mad available on the Apple website. This is the second update this week, and with the impending release of iOS 4.3 on March 11th looming ever larger in the windshield, Apple is obviously trying to cover all the bases with a slew of updates before hand.
Also in the batch of updates today was the Java for Max OS X 10.5 (Update9) and Java for Mac OS X 10.6 (Update4). More information on these updates is available from the Apple update page at http://support.apple.com/kb/HT1222. Both of the updates to Java contain a slew of security updates to deal with vulnerabilities in Java itself.