Some MSI Wind not dual core upgradeable?

Per the product blurb of Philippine-based online reseller PC Corner, it appears some models of the MSI Wind are not upgradeable to the dual core Atom when this becomes available in the future. Their product page reads in part -

"customer note . . . .

Due to the below cost prices posted (FREE DELIVERY is limited to Metro Manila area only . . +500 for provincial orders . . . our apologies in advance)

upgrade^ option: . . .ALL MSI Winds purchased between October 1, 2008 and December 30, 2008 is eligible for a chassis upgrade (charge is based on difference in prices between the new chassis and the original chassis) to handle New Intel® Atom™ 330 platform . . .

http://news.softpedia.com/news/Intel-Announces-Two-Cores-in-Atom-92203.shtml

The release of the dual-core Atom could also enable system vendors, like ASUS, MSI and Acer, to update their netbook and nettop offer with high-performance Atom 330-based products. There is also a high possibility that Dell and HP will be rolling out their Atom-powered netbooks before 2009, which could also support the new dual-core processor. On the other hand, some of us are expecting to see how good the new 330 is against VIA Nano.

Price Pattern:
PhP 19,999.00 cash = non chassis swappable
PhP 20,999.00 cash = new chassis swappable (+PhP 4,000.00) "

So if a unit is "non-chassis swappable" it appears it can not be upgradeable to the dual-core Atom. So now how do we identify which is which.