1) If running in TemplateVM, ProxyVM or AppVM: Perhaps add this info to window title? 
2) If running in StandaloneVM or TemplateBasedVM: Perhaps add this info to window title? 
3) If running in a TemplateBasedVM, and if there are updates available: Explain how to start a TemplateVM to update. 
 (output of `qubesdb-read /qubes-vm-type`) [no question]
 Is it possible to read from within a script if it is running within a StandaloneVM or TemplateBasedVM using `qubesdb-read` or so?
 From within a TemplateBasedVM... Can a script find out the name of the TemplateVM it is based on using `qubesdb-read` or so?