Samfirmware released a new set of firmware for GT-S8500. These firwmares are Bada 2.0
GT-S8500XXLA1_S8500OXALA1_XEU (Bada 2.0)
GT-Firmware: S8500XXLA1_S8500OXFLA2_TMT (Bada 2.0)
GT-Firmware: S8500XXLA1_S8500OXCLA2_EUR (Bada 2.0)
These firmwares can be download at Samfirmware