Yes, there is no app drawer button!
Google hasn’t altered the crux of their Nexus home screen for a long time now, perhaps from Android 4.0 'Ice Cream Sandwich’. While all the UI updates reflect on the home screen, the basic structure - 4 icons and an app drawer in the bottom, and a google search bar on top - has remain unchanged. But Android Police reports with a high confidence that Google is revamping the Google Now launcher. It’s called the ‘Nexus Launcher’ and it is supposed to ship with the 2016 Nexus phones codenamed Marlin and Sailfish.
The biggest, most noticeable change is the removal of the google search bar. Instead, the small ‘G’ button houses the search, which looks like a tag connecting the home screen to the Google Now page. On the right, there is a simple calendar widget that is not user removable. However, what is removable is the Google Now page!
The bottom section shows an equally surprising UI change: the app drawer button is gone! Instead, the entire bottom row can be flicked upwards to reveal all apps - as if they are hidden in a frosted pane of glass. You will also notice the folder redesign and the extensive use of translucency in the bottom row of icons. The home, back and switcher buttons may also be redesigned by the time the launcher is available, with the home button looking like a “flower”.
Android Police also reports that Google Assistant is ingrained into the Nexus Launcher, probably into the “flower” home button. While none of the changes are still visible, Android Police points out that certain icons designed for Google Now On Tap that never actually rolled-out might be a part of Assistant. The icons are below: