You are killing it with these updates. I'm loving them!
The new "Subscribed" box at the top of the thread looks great.
The location for the share on facebook/twitter buttons looks great.
The new Profile/Settings/Log Out line looks great.
I'm liking the dark theme up at the top, but I do think it could use some touches of blue to match the rest of the theme. (Maybe on the Home line)
All around, the styling looks great! 
I can't wait to see what is coming next!
...and now for the critiques, please note that these findings are meant to be constructive, to improve the forum, not to bash you in any way, you've done an absolutely great job, I just want to share some issues that others like myself might be seeing or coming across.
A list of what the marks refer to in the image is located below the image:
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• Left Image, Top: Inbox dropdown menu text "No new messages" is difficult to read
• Left Image, middle: There is a lot of unused space (circled in red), and I think that we could eliminate that space by moving the search bar up to the title line (indicated by a red arrow pointing to green line) and similarly, move the "Thread Tools / Rate Thread / Subscribed" up to the Page Numbers line (also indicated by a red arrow pointing to green line).
• Black Box in middle, Left: The Quick Navigation box at the bottom of the thread seems to overlay the surrounding lines (circled in red)
• Black Box in middle, Right: Is there a way to get rid of the extra 3-4 lines of space at the end of a post? I think keeping 1 line of empty space is fine, but currently it is a little excessive (circled in red)
• Right Image, Black Box at Top: There are times when the Advanced Search's "+" button falls off of the line it is meant to be on. It isn't due to resizing my window or changing the zoom, it just seems to occur on different pages (circled in red)
• On the Blogs page, the text for "Recent Entries" is invisible and the box that it is in is also missing its color. (circled in red)
Any chance you could share the former header image with the 405th Logo? I don't seem to have a copy and I don't know if that is the highest resolution image of the logo, if it is, I would definitely like to have a copy to keep.
