Its unsustainable to talk about sustainability. One of the reasons is good architects hate it, it somehow reminds them of a fashion, and all that is fashionable is not meant to last.
Besides, good architecture has always been sustainable: site and climate specific, sensitive to users, constructions and their life cycles.
In the middle of all the fashions, digital tools however seem to be giving us data that we were unable to see in the past, in less time and more accurate! That´s a trend to definitely look into!