Apple released a new iTunes upgrade version which dedicate especially for iPad users. The iTunes 10.5.3 allows iPad users to sync interative iBooks textbook to your iPad.

iBooks textbooks are created with iBooks Author which are now available as a free download on the Mac App Store.
This update is important for iPad users who are occasionally use iTunes to backup their data instead of iCloud. Some users might prefer the old way to store their backup and are not comfortable with the iCloud syncing platform.
The update is available for both Mac and Windows users.
More than one million of iPhone 4S and iPad 2 users had jailbreak their device since the first 3 days of the announcement by pod2g and iPhone Dev Team. Saurik tweet a message saying 494k iPhone 4S users and 463k iPad 2 users already install Cydia.

The numbers are surprisingly very high consider more than one million devices are jailbroken in just 3 days. The numbers could double up in a month and so on.
Besides that, iPhone Dev Team blog post also updated with the latest total amount of jailbreak iPhone 4S and iPad 2 devices.
The one million devices include A5 jailbreaks that using the latest RedSn0w and Absinthe tool while some are using Corona method.
Please remember that the latest jailbreak available iOS is 5.0.1
Updating your iOS firmware newer than this version does not guarantee that you can restore or unjailbreak your device successfully.