The ACBL Board of Directors has voted overwhelmingly to eliminate the Stop card after January 1, 2018. Although this decision applies specifically to sanctioned tournaments, clubs are encouraged to remove Stop cards from bidding boxes.
Players are reminded of the obligation to pause in the direct seat after a skip bid so as to avoid making unauthorized information available to their partner. And they should strive to maintain an even tempo during the auction. (see the Bridge Bulletin, Sept 2017, p 23)
My personal observation is that the Stop card is hardly used at Victoria clubs, and when it is, it’s mainly by players coming from other locations.
So it won’t be much of a change for most of us.