Insertion of graphics in the editor also works really well. All you have to do is to select a graphic in your text and just insert it. No fuss. However, the caption system does not work as well as the caption is in centred text and then everything becomes centred. To overcome this, you need to insert text in the next section. Not bad, but a short workaround. Not sure how the sectioning works but should work well. We'll see. 

The last test is that of citations. In the previous versions of Authorea, citations worked really well. How about in this version? As  Pepe would suggest, things seemed to work well

The citation is broken at this stage as the after citing the cursor does not move. Hopefully will be changed in the future versions .\cite{Pepe_2012}\cite{Pepe}

Bottomline: with minor bugs here and there, this is a lovely change in Authorea. More power to you, Authorea.