Definitely planned @silverlogic6576 !
“Fun” fact, we already started to work on an early version of this (multi workflow trigger / allow multiple workflows in a trigger_map for a single item) but ultimately had to abort that solution completely as it had too many edge cases. The conclusion was that a single trigger should create a single “Build”, and parallel parts should be under the Build (like “stages” or “tasks”) in hierarcy (in practice e.g. have a single build page, but there separate “boxes” / logs for the separate “stages” / “tasks”), otherwise this change would break too many things (including e.g. the Rolling Build feature).
So, long story short, we’re committed to implement this feature but it’ll take more time than we originally expected. No ETA yet, it definitely won’t be available this year (in 2017), but definitely planned for next year (2018) “ASAP” 