I have a prediction for when, and it is extremely far fetched, for when the next update will drop
June 17
I believe this because it is when the Xbox sale runs out, and explicitly states that all the squads will disappear from the store which are also going to be removed from the update.
This might be a hunch - but it is one which is a coincidence I cannot ignore
I think it will drop along with the new battlepass, though you might not be wrong about sales hunch.
at this point I prefer them to release it along with next major update to make it feel like more MAJOR update. Considering updates are constantly gets delayed for lot of bugs inexchange of not enough content
it will drop with battlepass unless developers keep want to add more content which is possible and i hope is done this way (asloong doesnt ruin more stuf)
i 1000% remember them saying Somewhere that the next update will remove all these squads, including the M10 Ersatz tank squad
coincidentally, at the end of the xbox sale it is being removed