There appears to be a cache, however. Motorola is only rolling out the Ice Cream Sandwich update to WiFi-only version of the Motorola Xoom. Users like ourselves, with the 3G Motorola Xoom, will need to wait a few more weeks for the update to be pushed out.
According to System Information screenshots from other sites around the web, this particular version of Android 4.0 Ice Cream Sandwich is build number IML77 with kernel version 126.96.36.199-gf03a679. Prior to installing the update, the boot screen will appear noticeably different and system fonts will appear smoother and somewhat easier to read.
Nevertheless, we can't help but postulate that this unforgivably late update will not help Motorola increase sales of its Xoom tablets. The company recently launched its second-generation Xoom, officially named the Motorola Xyboard, in December 2011. Unfortunately, the second-gen device shows almost no functionality improvements over its predecessor and it appears any performance improvements going forward will be entirely software-based.