Definitely nice if the N280->N450 performance boosts can be realized going from Z520->Z6xx .
I like the Z520 in my Asus eePC Tablet, but it needs a few more features (like 64bit support which isn't confirmed in this article on the Z6xx, but I would hope is coming) and a little more speed (prefer 1.7+ Ghz vs 1.3 now), plus more RAM, but I'm disappointed to read that the video output support may still be limited to 1366x768 due to display technologies (especially after the recent DP to LVDS announcement), as I would hope for a 10" tablet to move in the direction of 1280x800, but allow for output to an external monitor of 1080p resolution. I hope that there is support for higher resolutions via add-in ICs, but considering it's focus is the benefits of SoC it is unlikely that many Mfrs would support that, so having an HDMI or DP 1080p output doesn't seem to be on their radar (VGA on the N450 and Z520 is limited to 1400 x 1050 which is an odd resolution but fits perfectly the one old LCOS projector we have). I love being able to take my tablet and still show full-screen presentations, but if it's not supported in the display portion of the chip it won't likely be there, and will be seen as something "consumers don't want" not that engineers didn't consider when positioning it as a tablet solution.
Looks like Pinetrail may be the way to stay if the I/O situation on Moorestown isn't more impressive than what this article conveys. It seems to have take the Z split away from it past where it was superior to the N lineup until Pinetrail. Just wish more ODMs/OEMs put the D510 in their netbooks/tablets than the N450.
I don't need a Corei7 in a 12" convertible tablet like the Lenovos, but I would like a little more than just a smartphone processor as well, just wish intel were thinking that gap too, especially since I have lots of enterprise level customers thinking the same thing for mobile computing.