This is from the LNR precision Web site:
Update: 2/16/23: MTR4 V2.3 is not available for purchase now but we will be offering these again in the Spring of 2024. We don’t have an exact date yet but the target is by the end of March. This will be the only and last offering of the MTR4b V2.3 radios as we are shifting focus on a redesigned and re-engineered version of the popular MTR3B! It is our hope to have these out in Fall of 2024 if possible, but no guarantees.
I’ve been trying to buy a MTR-3B LCD for years with no luck. I’m hoping that I will have a chance to buy one of the new ones!