With MacWorld fast approaching, let’s look over what we currently know about iPhone firmware 1.1.3 and what it will mean for us lost souls who are running jailbroken iPhones. We’ll discuss the leaked version of the software and what I’ve gleaned from talking to Andru and Nate True of iBrickr fame and from the rumor and innuendo surrounding today’s keynote.

1. You shall not be able to activate your 1.1.3 right now so don’t upgrade – No matter what Steve promises today, don’t upgrade your iPhone. Just wait. Nate and Andru basically said this thing is locked down tighter than [insert hyperbole here] and that most of the traditional methods are unusable. Will someone crack it soon? Absolutely. I honestly believe that most of these hacks are inside jobs and with an SDK on the horizon, it can’t be long before a programmer asks the right question in an Apple support board and breaks through to the other side.

2. You shall be able to make your own apps and sell them – According to the leaked keynote, the absolutely veracity of which I sincerely doubt, there will be an online store for iPhone apps and you will be able to program and upload your manifold works and sell them, just like you would on the iTunes store.

3. You shall be able to modify icon order – According to the leaked 1.1.3, the biggest change in the OS will be the wiggly, movable icons. This feature will allow you to move applications from page to page and add web shortcuts to your front page.

4. You shall have new apps – There is some talk about iChat and an RSS reader in the new firmware. I’m 80% on iChat — Apple would have to run its own proxy servers to get a high-quality IM experience — but a guy can dream. Because AT&T doesn’t have the Sidekick — hands-down the best IM client out there — they probably don’t have their own proxies. As a result, you’ll basically get what you get with the current crop of IM clients: wonky, half-assed connections that drop out with great frequency.

5. You shall probably crash more – What do you get when you give an SDK to millions of programmers? A few cases of janky code, for one, along with hundreds of great applications. Unfortunately, the jank will eventually crash your iPhone and you will be sad.

6. There shall be fake GPS – If you recall,