The all important MacWorld kicks off today and while I’m not on the floor in San Francisco, I’m still managing to find some juicy Apple-fueled tidbits for you to consider. For instance, there are rumblings that AT&T will announce the availability of an iPhone tethering plan, finally letting iPhone owners use that wireless Internet connection on their MacBooks.

Yes, I know that there are a couple of applications out there that can effectively transform your Apple iPhone into a wireless router, but those go against the AT&T terms of service. By offering wireless data plans that explicitly support tethering, AT&T can make a lot of iPhone users a heck of a lot happier.

Nothing has been confirmed just yet, but one of the more likely scenarios is to see a plan in the $30 for 5GB range. This is the same tethering data plan that AT&T is offering to its BlackBerry users, so it’s only fair that the Cupertino fans get a similar deal.

Bear in mind that iPhone tethering with AT&T is still a rumor at this point, but if anything is going to get announced at MacWorld, we’ll find out before the end of the week. If we hear nothing, well, then it’s back to a lack of iPhone tethering for you.