At a high level, a Future is a collection of smart contracts allowing the tokenisation of future yield. It is represented by a platform, a yield-bearing asset (IBT, LP token...) and a duration.
They can be quickly identified through the following nomenclature:
PLATFORM-IBT-DURATION. For example,
During the Beta, 3 monthly Futures were available:
HARVEST-IFARM-30D, with more platforms coming along with the V1 launch.