Google+ iPhone App - Stream screen

The next instalment of my Google+ App for iPhone...

Not only am I trying to make the whole thing look prettier, but I have put a lot of thought into the UX of the app. I believe the way I have designed this new mock up would simplify the users experience, and make getting from screen to screen, posting and uploading a much faster and more enjoyable process.

On the shot you can see the hover of the bottom nav as well.

Please give me lots of feedback! :)

You can see the full version here http://cl.ly/8ysy