The Appbrain site received a minor updated today that allows it to display the full gamut of app screenshots from the Android Market as opposed to just two. Similarly, they're also working on an update that will make Gingerbread and Honeycomb-specific apps available, as they're noticeably absent at this point.
The Pixel Launcher from the Pixel 3 brings the Assistant button back, forces adaptive icons on all apps, and more [APK Download]
Which Pixel 3 features are coming to older Pixel phones (and which will remain exclusive)
[Update x2: Statement] The Pixel 3 is the first Verizon LTE Android phone to be SIM locked in a decade, and that'll be a problem for some