It is said that the Android 2.3.3 update for the Samsung Galaxy S is avaiable for Kies. Severale user
confirmed that. If you have a Samsung Galaxy S at home, connect your USB-Cable to your computer and start your "favorite" software Kies. Maybe there is something nice to install.
Also a new testsoftware has appeared on samfirmware.com. If you want to install this software you should be a technical expert and know that your mobilephone could be broking due tis operation.