Apple has released Time Capsule, a NAS (network-attached storage, I'll admit I'm so far from an IT guy that I had to look it up) unit that will wirelessly sync with multiple instances of Time Machine, all the while also working as an 802.11n base station (there are three included ethernet ports as well). Time Capsule has wireless backup, wireless networking, and even a USB port for networked printing, a networked hard drive, or both with a USB hub.
And perhaps most amazing is the sheer size available-- it's $399 for a 500gb hard drive, and $499 for a 1 TB hard drive. Sure, that's a little pricey if you've got only one or two computers at home, but $500 for a complete (and completely wireless) backup solution for a house full of computers is a pretty nice setup. This definitely won't cause as much of a stir as the iPhone updates or the MacBook Air today, but for someone who's been seeking a backup solution for a whole house of computers, Time Capsule has to be pretty good news.
It's available for preorder right now, and will release in February.