I seriously hope Apple doesn't release a netbook...EVER. Smaller doesn't necessarily equate to better. Every netbook I've played around with was painful in terms of the keyboard size--the Asus ones are even worse because they decided to put the L and R mouse click buttons on the sides and it's awkward to use ...beyond awkward. The keys are clumsy and small - the thing is just impossible to use.
The tablet idea to me is DEAD. Toshiba, Asus and others tried the table computer years ago - do they even sell them anymore? They were overpriced and just a novelty -- not something that did anything for productivity. Plus you look like a geek carrying one around...kinda like people who walk around with Bluetooth in their ear ALL DAY LONG, waiting for a call.
The iPhone/iTouch is the platform Apple needs to keep pushing...this past weekend I was away on a camping/canoeing weekend and had my iPhone with me (left the MacBook Pro at home). I was able to text several people, send all the e-mails I needed to send; my wife calls me and tells me the Social Security card for our newborn arrived and gave me the number...while sitting on a canoe (taking a break) I logged on to my bank/insurance company, added our baby and opened up a joint savings account for her...all from my iPhone.
Did I make typing mistakes on the iPhone keyboard? Absolutely, but if I had to choose between a crummy netbook to carry around and an iPhone/Touch the choice is easy. Just like handheld computing (Windows/Palm based Pocket PC's/Palm Pilots) this netbook fad will die fast and I think it's because they don't do enough (they're good for email and web and that's about it whereas an iPhone can do that and talk, text, run apps, download music etc.).