I don't have it yet, but I'm assuming it updates apps, widgets, perhaps radio, bootloader and other things transparent to the user. As far as Android version and Sense go, 2.3.5 and 2.1 (respectively) are as high as were going to get for the Wildfire S without rooting and installing a custom ROM.
Don't just say thanks, click Thanks
To report abusive posts, porn or spam, click Report
Android Forums Site Rules/Guidelines
Please don't send me PMs with support questions. That's what the forum is for