Update: At the time of last update, the 16GB Nexus 4 is consistently listed as "Coming Soon," with the 8GB version going up and down. The 32GB Nexus 10 is also consistently listed as "Coming Soon." If we receive any word that these device's are again available, we will update this post.
Just a few (long) hours after Australians got their shot at being the first kids on the block with a brand new Nexus device, it looks like orders have opened up for the US and Canada as well. Note: Since these devices just became available, you'll likely notice some errors or inconsistencies in availability.