Earlier we wrote about the Passcode Hack and Exchange bug found in iOS 6.1, now German site iPhone-Ticker reports that Apple is planning to release iOS 6.1.2 early next week to fixthe lock screen passcode issue and Exchange bug and that are affecting iOS 6.1 users. » iOS 6.1.2 Coming Next Week Including Fix For Exchange and Passcode Bugs

An Exchange bug is causing iOS 6.1 devices to continuously loop when syncing a recurring calendar meeting invitation to Microsoft Exchange and this way crippling battery life and performance. Yesterday Microsoft offered workarounds for this bug, and today Apple announced on its support page that it has identified the problem and is working on a fix. » Apple Working On Fix For iOS 6.1 Exchange Bug

Google released a beta version of their service Google Sync for the iPhone which allows you to synchronize the contacts and calendar with your Google account.
» Google Sync (Beta) for the iPhone