The update follows version 0.3, which was released over the weekend to fix an overheating issue in jailbroken 32-bit devices. The update was pulled shortly after it hit, due to users reporting “mild to serious issues†with the package, but the issue was resolved and it was re-posted.
Even if you have a 64-bit device, or haven’t experienced any crash-related issues on your 32-bit device, it’s still recommended you update, as you [typically] want the latest version of Pangu. Be sure to save any work before you update, because the process does require a reboot.
As we said, OS X version will be coming soon, but you will have to wait some time…