Most likely:

• iPhone 3G Nano
• Mac Nano sub $1000
• iMac refresh with the same Mac Book updates

What I would like to be surprised by (but probably not the place and especially since Steve aint giving the KeyNote):

• Mac Pro Refresh
• Final Cut Studio 3
• Apple Phenomenon

[Update] And I will have to go with Rumor: Unibody 17 inch MacBook Pro from TUAW – seems to be the easy and logical extension to what Apple has already done with the MacBook Pros. But if it is the only HW introduction then I’ll be terribly disappointed.