I was wondering about this too. I think I figured a way to get it.
Right click on the left pane. Uncheck "Show all folders". This segments the left lane into three. The top has Home and Cloud, the middle section is the Quick Access and Recent folders, and the bottom sections are your drives. Quick access folders just have a pin next to them.
I was initially confused because I was trying to spot "Quick Access" but found it nowhere. Hope this helps.
You can use the solution from Cyked92 "Show all folders" or you can use the easy way.
RIGHT_CLICK on File Explorer on the Taskbar. Your Pins are there. This is not obvious. It took me three days before a coworker got the update and said that there was no difference. She showed me.