Tomorrow, Steve Jobs will take the stage at Macworld to present all the latest and greatest gadgets and software from Apple. It should be a good show and it’s sparked all sorts of prognostification across the interwebs.

Here are my predictions.

Movie Rentals on iTunes

This sounds like it’s all but a done deal. I would guess that you’ll 24 hours to watch a movie that will cost $3.99. I would prefer for more hours for less money, but this seems relatively fair. In particular, I think we’ll see an update to Apple TV that will make it work. (See below.)

Oh, and everything will be supported by iTunes 8.0.

Apple TV

Specifically, I think Apple TV will allow for browsing and buying from your couch. This seems relatively trivial in the wake of the iTunes WiFi Store on your iPhone.

Plus, I think they’ll extend the “instant-on” feature currently used by movie trailers to allow for virtually “instant-on” movie rentals. This makes the 24-hour rental window more palatable because you can basically start watching as soon you decide to make the rental.

Still, you should be able to start your movie on Monday and finish on Thursday. Maybe they’ll institute a “one-watch” policy?

iPhone

I think we will see a storage capacity boost. You’ll be able to buy 16GB for the same $399, I bet.

I think we won’t see an iPhone with a 3G high-speed internet connection just yet. I bet this comes out in September with the regular pre-holiday iPod updates.

You’ll also see some previews of apps developed with the forthcoming SDK. I predict a game from EA, something from Google, and an Apple movie times app. Software version 1.2 required.

Ultra-thin MacBooks

Here’s where I diverge from most of the Mac prognosticators. I agree that we’ll see a super thin and light laptop, but I bet it’s a replacement - not a compliment - to the existing MacBook line.

Basically, I think we’re looking at the MacBook Nano tomorrow, and I think it will be humungous. Basically today’s MacBook, only super duper thin.

I think there will also be a thinner, lighter, more powerful MacBook Pro. Maybe even a smaller 12 or 13 inch model.

Something in the Air

Finally, I have to address the Apple taser banners (and teaser website) using the tagline “There’s something in the air.”

Most have explained this away as a “lighter than air” thing laptop, probably called the “MacBook Air.”

But that doesn’t seem like a very satisfying tie-in to me. It seems to me like “something in the air” refers to some sort of wireless something or another.

3G iPhone? “Cordless” MacBook? I really don’t know.

I think maybe some sort of WiMAX deployment - basically super fast, 4G level wide-area wireless. Built into every MacBook Air? Yes, please.