This is a solid update for the Chrome OS platform as it is now being promoted directly from the Google Play website.
Google has traditionally solid only Android based devices here.
Samsung Chromebook was announced recently. The big change is that it is powered with an ARM based processor. Previous Chromebooks have featured an Intel processor.
It is not clear if Google would directly sell the 3G edition of this model through the Google Play Store.
Samsung Chromebook 3G is on sale through Amazon right now.