Those images are of Australis, mockups made at least 5 or 6 months ago. They also appeared a few days after some big discussion on Bugzilla after an attempt from the Firefox developers to use native toolbar buttons which was hijacked and prevented by some addon developers (that's why I don't use Stratiform anymore, the developer basically called a bunch of friends into spamming bugzilla against such measures, because he didn't like it and was comparing using native style to using Windows 95 apps on Aero, which was an outright lie and incredibly annoying).
The panel-based download manager is a plus and I must admit it annoys me it wasn't developed earlier (the Safari panel was based on Firefox mockups and plans, just so you can see how long this is planned for inclusion).
I agree with the rest, it also bugs me that Mozilla decided to drop support for embedding Gecko in other apps (unfortunately I don't have links to prove this, but I know I've heard it somewhere), which is (in my opinion), one of the reasons Webkit is gaining such popularity and basically undermining the mobile web (developers are mining themselves by only using the webkit prefix because they only care that it works somewhere, if there was a bigger variety of default browser engines, and not just webkit variations, on mobiles, developers would be forced to make it compatible with more engines, or else their sites wouldn't work, this is also why it bugs me so much that embedding Opera requires paying a fee, thus making it unlikely to see Opera as the default browser on mobile).
