Why does the Nexus 7 have a notification bar? In some of the reviews I have read of the new Nexus 7 tablet, it seems to have a notification bar. For example:



Why is that? I was under the impression that Android 3.0+ on tablets ditches the bar for a tray in the lower-right corner, next to the software buttons:



So why is this? Did they ditch the tray in 4.1? Is it because the units currently reviewed are not final, and the ones that will be sold will have the tray? Is it because it's too small at 7"? (although, the galaxy tab shown above is 7" as well, but maybe they changed the size limit in 4.1?)
Apparently, in the SDK the 7" form factor has the phone layout and tablet apps. The 10" form factor will still be tablet layout and tablet apps. I also heard that in 4.1 they expanded the functionality of the notification area so that notifications can do more (e.g. Reply to sms from notification area). I don't know how true that is though.