With all the ongoing work Google is doing in Android improving support and functionality for keyboards, pointing devices, external displays, desktop chromium for android, VMs running desktop linux, etc. the desktop like experience is set to continue improving for some time.
Its looking like there will be a tablet with keyboard that connects via pogo pins at some point, theres the possibility to use phones connected to external display, keyboard and mouse and theres informed speculation that this laptop may also run Android.
N1b then maintained and not canceled shortly after
Google have never dropped maintenance once a device was released. They have always upheld the full duration they guaranteed.