VTE ArmA History
You should read the initial history from OFP VTE history page, as its pointless to copy paste here.
As for ArmA history, read on…
granQ started the ArmA VTE history really, he started to put together OFP VTE ports to ArmA in 05-27-07 by posting in PMC Tactical forums VTE, first step into ArmA topic.
Nothing more major happened in the VTE ArmA history.
Final ArmA release was made on 06-14-10 (actual release on 15th).