We have been keeping an eye on the Play Store, and we have just seen that the Nexus 10 16GB is not longer available for sale in the store. So, if you tap the Nexus 10 on the homepage, you will be taken directly to the 32 gigabytes version. Earlier, it used to take it to the 16 gigabytes version.
This is, of course a small change, for sure. Looks like Google is tiding up the online store to make way for a slew of new models.