I think of this is a 3gs equivalent. I think this is a dumbed down version of the current 13" with the new ivy bridge and most like likely replace the white plastic macbook dropped a few months back. I think Apple will reserve the Pro name for something more powerful.
I feel the next Pro line will all have quad cores and Retinas. I would like to see these new Pro's with all the past rumors listed in a 14" and 16" form factor (3612qm is a quad 35 watt fits perfect for the 14" and the 3720qm and 3820qm for the 16").
As a current 17" MBP user I would go for a 16" (no less) and the many people that have that i talk to that have a 13" would like more power but dont really want a 15". and the current 15" user can go lighter or more power.
This would be a wise move for apple as a Pro user is looking for power and a Student/ entry customer might care more about the legacy options (ODD and basic CPU) at a lower price point
I think they will keep the current unibody design as a a entry model with a sub $1000 price. even the current 15" Would be nice to have around for about $1299. Dumbed down of course.
Just look at how apple is keeping legacy product at lower price points. (ipad 2 at $399 and 3gs $0 and iphone 4 $99) and also notice how they dumbed down the iphone4 from 16Gb to 8gb to help reduce price.
I think this is the trend for apple to make it affordable help drive new consumers in.
Line up should be like this
--at current price $999-$1299--
13" ... a 15" later on"?
--New price $999-$1299--
MBP (Professional Notebook)
All Quad, All Retina, (would like) All Dedicated GPU's =)