We can also confirm that iPhone OS 3.2 supports file downloads and local storage in the browser, which means you'll be able to pull files off the web and use them in other apps, and there's at least the beginnings of SMS support buried within the code -- a fact we were able to verify with noted iPhone jailbreaker chpwn, who sent in the above screenshot from a hacked-up copy of the iPad simulator. (The simulator always says "iPhone simulator" in the menu bar, but that's the iPad.) chpwn also tells us he's found some inklings of actual phone support, there's a spellchecker, and that both the new landscape orientation for the homescreen and keyboard support appear to be destined for the iPhone itself when 3.2 comes out.
We're not sure what any of this means at this point, or if any of it will ever be implemented, but we're definitely starting to get the impression that Apple didn't tell us everything there is to know about the iPad on Wednesday -- and we're even more curious to find out what iPhone OS 4.0 will look like when it arrives.
P.S.- chpwn was also able to port iPhone multitasking hacks ProSwitcher and Backgrounder to the iPad simulator, which is certainly going to be useful if an iPad jailbreak exploit is eventually discovered. Check out a shot of it going in the gallery below, along with some other settings panels the coder dug up.
Update: We just got another tip from iPhone jailbreak dev Ryan Petrich, confirming that there's a spell checker with multiple dictionaries and user-added entries (huzzah!), much richer text support for apps, the ability to selectively draw to external displays (using the VGA or component adapters, we'd imagine), location-aware ads in Maps and possibly other programs that use the Maps API, file upload ability in Safari, a modifiable cut / copy / paste menu, and, most interestingly, prototype support for a "handwriting keyboard." Maybe we'll see some stylus action on this thing after all. Peep Ryan's take after the break.