Silicon Rumors is reporting that the next MacBook Airs will finally have 3G cards built-in. This closely follows evidence from Apple’s Job postings looking for MacBook 3G QA engineers which were quickly pulled after being exposed. Silicon Rumors also thinks that the new MacBook Airs will drop significantly in price which *might* quiet those looking for an "Apple Netbook".
They are thinking between $1300 and $1500 for an entry level MacBook Air with SSD and maaaaaybe GPS.
We believe 3G will make it across Apple’s high end MacBook line (optionally) even though AT&T and international carriers will have tethering options for the iPhone.