This means people can use split screen feature for multitasking, as well as access quick notifications. (indianexpress.com)
There is quick notification panel on the top, but it shows the notifications of the installed applications. (phoneradar.com)
However if you were hoping LG would mimic the Pixel's swipe - down shortcut on the fingerprint scanner for quick notification shade access, you'll be disappointed — the gesture isn't enabled on the G6. (androidcentral.com)