Google restocked the Google Play store today, and it took less than three minutes for those Nexus 4 phones to get sold out. I had one in my cart, but it wouldn't let me complete the purchase. That seemed to be a common complaint.
I'm glad I own a Galaxy Nexus (which makes me sound greedy, but I'd pass that one to my husband, who doesn't have a less than year old phone) so I already have the capability of making Photo Spheres, thank goodness. I just don't have the faster processor, slightly better resolution, and induction charging goodness of a Nexus 4.