It looks like you're referencing a specific version of (update/patch from October 9, 2018 ) – likely the one that included the Tactical Legacy Pack (which was previously exclusive to certain editions or pre-orders).
The string "xcom2warofthechosenupdatev20181009incl exclusive" likely refers to a specific distribution of the XCOM 2: War of the Chosen - Tactical Legacy Pack , which launched on October 9, 2018 xcom2warofthechosenupdatev20181009incl exclusive