From what I read its a fully binary compatible 'low end' Cortex A8/A9. On a netbook you want the 'high end' ARM; ie. Cortex A8/A9.

That it is binary compatible is very useful for having it part of your product line if you already have Cortex A8/A9 products. Porting will then be easier, and it will be easier to manage different firmware versions.

So we will see it in use rather in mobile (smart)phones since its successor of ARM926EJ-S and ARM11 which are widely used on mobile (smart)phones. Just think of succesor of N97 being N98 with Cortex A5. Although my source says 'the first devices shipping with Cortex A5 will ship probably in 2011' I don't see this backed up with arguments. It would not surprise me a successor of N97 would sport a Cortex A5, and come out say 2nd part of 2010 (N97 not having Cortex A? was one reason I not bought it). Or, such successor would use Cortex A8/A9 like N900, with the next device in the hierarchy having Cortex A5. In any case, this will replace the mid-range eventually. So succesors of devices like E-Series and N-Series will contain these eventually.

So, in short, I'd say: high-end products get A8/A9, mid-range A5. Low-range runs S40 (in Nokia's case) on cheapest stuff avail; is totally different OS so not matter to S60's E-Series and N-Series. Before that maybe the high-end products get A5 and rest stays as-is, but maybe transition to whole Cortex line is easier to manage, skipping interim path. Then you could say 2011 makes sense.

...but I don't know... not an expert in this regard... not an analyst rather thinking out loud rather..