When I was trying to get a T3 Mk5HD 3.6-18, I finally emailed them after waiting for months. They replied they should be available soon and I think it was either that evening or the next day it was available.I have been on their notification list for four different models--all MarkHD models.
Crickets
I’m not sure if it was a coincidence, or they threw one up on their site because I asked about it.