I don’t have any sources to confirm my predictions, but below are the features I expect we’ll see announced tomorrow during Apple’s preview of the iPhone 3.0 software:

1. Mail will be more streamlined.  So if you have 3 mail boxes you won’t have to navigate to each box
2. Contrary to the majority, I think we’ll see background processes announced, but due to battery limitations I’d assume only two processes will be able to run at a time
3. Copy and paste
4. Perhaps grouping of apps, but this might be a stretch, though
5. A premium game store which will coincide with the launch of Metal Gear Solid Touch launching 2 days later

I’ve heard murmurs of a 10-inch tablet computer being announced tomorrow, but I think Apple, assuming they have something like that in the works, will stay on point since their concern is to surplant any Palm PRE buzz.