A difference with the new system is that page numbers no longer appear below topic titles.  The old system relied on clicking the last page number so you could go to the most recent page/post.  In the new system these numbers are gone.  But you can go straight to the last page/post by clicking on the "Last Post" link in the right hand column of any topics list.

On home pc it seems to  done by clicking the double forward arrow above your red line ?

Looking forward to the upgrade if you can get a go to first unread post or even last read post function.

Show all unread topics/posts would work too.