I don’t think there’s any reason for an 18.3.1 update today unless there’s some really critical security fix that needs to be made. My guess is we get 18.4 beta 1 and a hardware announcement this week, and 18.3.1 next week when the new hardware becomes available. Usually they don’t release the update that adds support for the new hardware until the new hardware is available, and since 18.3.1 will likely be the update to add that hardware support, chances are it will ship next week or so when the hardware is actually available.