With Google I/O due next week, "Will Google out its next Android version at Google I/O next week?" Of course, as a listing on Google Play for the Galaxy Nexus +HSPA reveals it as the first Jelly Bean Android 4.1 compatible device.
For a brief time, users who tried to purchase an unlocked Galaxy Nexus from the Google Play store was greeted by a blurb describing the device as the "the first phone with Android 4.1 Jelly Bean."
Google seems to have caught the error, as anyone, who puts a Galaxy Nexus in their cart getting a new thumbnail that includes a picture of the device minus 'Jelly Bean.'
However, this screenshot is still visible, and a (much) closer look reveals what appear to be a few minor changes from the Ice Cream Sandwich UI.
Droid-Life points out that the slightly different Google search bar aligned along the stop of the screen bears a vague resemblance to the one seen in a screenshot Google released to promote their updated Google I/O app, as shown in the picture below - you can see "A slight deviation from the Holo (read: Tron) UI introduced in ICS, the Google search bar is not solid and transparent, while still maintaining a flat, minimal look."