The Bada 2.0 software update is finally being rolled out to the Samsung Wave S8500. Samsung has still to make an official announcement or to publish a rollout schedule, but it should be announced very soon.So if you have not installed one of the leaked ROMs you can check for the update in your region by connecting your device to your computer and launching the Samsung Kies software suite. You can follow the on screen instructions to backup your device and update the software.
source - SamMobile