We are already busy preparing our team of liveblogging ninjas for tomorrow's Apple notebook event, which takes place at 10am Pacific Time on Apple's campus in Cupertino. This event has been rumored since just after Apple's last special event wherein the company introduced new iPods, but updated MacBooks and MacBook Pros have been on many Apple fans' wishlists for quite a while longer. So, what do we expect to see out of tomorrow's announcements?

The existence of these new notebooks is a given—they are, after all, acknowledged right in Apple's invitation for the event, as well as an Apple support document accidentally posted on the company's website over the weekend. But it's what's on the inside (and outside) that has people really buzzing.

Reports surfaced in July that Apple would use a mobile chipset from NVIDIA in its redesigned notebooks instead of adopting Intel's Montevina platform. Then last month, we heard a rumor that the chipset would in fact be from NVIDIA's MCP7x series. The latest info from today pinpoints the NVIDIA MCP79 as the lucky winner. Besides the improved graphics performance over Intel's offering, NVIDIA's chipset offers the benefit of using only one discrete IC instead of two. That allows Apple to save some space on the motherboard and should ideally draw less power.

Various leaked photographs of the new MacBooks lend credence to long-whispered rumors that the MacBook line will be moving away from plastic casings and adopting the aluminum case of its siblings, the MacBook Pro and MacBook Air. The future of FireWire in the MacBook is unknown, as these photos seem to suggest that the entry-level systems will no longer have any FireWire support. The 15" MacBook Pro is supposedly losing FW400 support and will now only have one FW800 port.

There are a handful of other, less-predictable rumors about what we might see tomorrow, too. Digg founder Kevin Rose claimed last week that a source told him that the new notebooks would sport Blu-ray drives. If true, then the announcement will finally put to rest a rumor that has been making the rounds for years now. And of course, there's the rumor from July that the updated notebooks might have glass trackpads and that a Mac tablet might finally make an appearance. Finally, on the craziest end of things, Weblogs, Inc. founder Jason Calacanis made headlines recently by saying that Apple plans to introduce a line of networked HDTVs that will be able to stream content from Macs and PCs, Apple-TV style (but sans the Apple TV). Let's just say we're not putting our money on that one.

With so much speculation going around, some more off-the-wall than others, prospective Apple notebook buyers can't decide whether to be excited about tomorrow or not. As for us, we've learned our lesson the hard way—all we're expecting are new notebooks, and everything else is gravy. Be sure to check back on our front page tomorrow morning for our live coverage of the notebook event as it unfolds so we can all be surprised (or not) together!