It's still a gingerbread firmware. Just got it by using software update on the phone itself. The onscreen note just says "Improve stability".
The only difference I see is it loads on a new non-removable app called "Music" which when selected redirects you to google play to download the official top 40 app.
The only difference I see is it loads on a new non-removable app called "Music" which when selected redirects you to google play to download the official top 40 app.