Is this a new button? or am I just blind?

These are not necessarily mutually exclusive.

I just noticed "thread tools" and "Display Modes" - wow, we are getting progressive!

When will we get 'strikethrough' code for humorous entendre? Maybe just for Geek's Lounge?

The view first unread button has been around forever in the same place. The thread tools and display modes dropdown menus have always existed, as well, although they used to be at the top of the page and now they're at the bottom.

I didn't say it :)