Believe it or not, four months or so is not a lot of time in the life of a software developer as capable and busy as arminelec or SweViver. PimaxExperience shows both those two are in that category of people who can put their heads down on a major project, and not look up until it is done and time to move onto the next problem to solve.
As much time as they put into PimaxExperience, there really can’t be too much doubt both arminelec and SweViver both ended up with a backlog of other things they just had to take care of promptly.
And oh yes, a new baby is definitely going to demand some attention. 
I can tell you with 100% confidence that the headsets are workable for at least some users with 60 IPD. At ~58.5 IPD, software IPD adjustment becomes necessary, but it does work. Part of the problem may be the distance between eyes and canted lenses varies with face shape - eyes closer to the canted lenses will perceive a wider minimum IPD.