iPhone OS 4.0 and iSlate coming

According to various Apple-related rumors, we can expect to hear about the following on January 27:

• iPhone OS 4.0 (also for the iPod touch)
• iSlate (Apple Tablet)

I'm sure Apple will announce other products, changes, and enhancements, but I really don't care about the other things. I'm mainly interested in the iSlate because I want to know what Apple has up its sleeve.