Samsung's S60-powered i8510 has been out for a few months now and has proved to be rather popular. Unfortunately, the device has quite a few bugs that prevent it from reaching its true potential as the most highly specced S60 device to date. Even more unfortunate, though, is that Samsung don't currently offer any official methods for users to update to the latest available firmwares at home.
THIS METHOD OF UPDATE IS NOT OFFICIALLY SUPPORTED BY SAMSUNG. IF YOU WISH TO UPDATE YOUR I8510 USING SAMSUNG-APPROVED SOFTWARE, CLICK HERE.
The Samsung i8510 users website have an article that provides everything you need to upgrade your i8510's firmware at home. Please remember that this process is totally unofficial and is not recommended for anyone who isn't comfortable with manually updating their device's firmware.
There is no changelog available for this firmware revision and it's apparently intended for users in eastern European countries. It does support the English language.
Head over to Samsung i8510 users to download all 6 files and then follow the included user guide.