with these track template presets you'll be able to load a userdefinable count/layout of multiple tracks you have created/stored yourself into an open song, via drag&drop from your browser - just as you prefer them, based on your individual workflow.
here's what it means in detail:
basically whatever track combination you have set up - be it a multitimbral/multiout instrument like f.e. kontakt or superior drummer with a track per instrument with separate midi channels or multiple instances of monotimbral/stereoout with each their own track, even audio tracks that you set up according to your default needs with insert/send effects - whatever combination of tracks you prefer as a track template, with or without events - highlight the tracks you'd want to include into that preset, rightclick to "save as track template" or, while the tracks are highlighted, drag one of the highlighted ones to the browser where you want the track template to be stored as one file. actually the handling could be close to the one used when creating musicloops.
the end result should be one file in the browser, that, like musicloops can be loaded per drag&drop onto a free section of the arrange view, for all channels, mixerstrips, events, insert fx and send fx with their respective return channels are loaded, just as you have saved them to the track template preset.
the track template preset should also be expandable like the musicloops, showing its contents to be accessible individually.
this way you could easily create several track template presets for your goto instruments, not having to set them up manually each and every time, or you f.e. want to record your favorite vocalist into an existing song you currently work on, so you know you need a mono audio track, an eq, a compressor, a de-esser and a send to a delay and a reverb including their return channels (you name it). as you know the vocalist, you probably know the setup you need. now, with a track template preset you set everything up as you need it - once - then save it and you're able to load the configuration with one drag&drop.
and so on. i guess you get what i mean.