I propose a classification of upcoming topics based on time-to-usage:
ST
short-term 1Y
topics expexted to be used in several real building projects within one year
MT
mid-term 3Y
topics expexted to be used in several real building projects within three years
LT
long - term 10Y
topics expexted to be used in several real building projects within ten years
e.g. distributed CDE, semantic web