Unfortunately not for semi-float 40/45/55/60 rears - unless something has changed. I called and bugged them again recently but they'd rather make new products for vehicles that are manufactured in the hundreds of thousands. Like a Prado.
I have more hope for Auburn Gear to come through as they make electric lockers now too. They even make rebuildable clutchpack limited slip-to-lock versions for some vehicles. Many of their products are still made in house in small batches and they're still a small enough company to listen. They'd need a lot of input from potential buyers but they've indicated that a rear electric locker for older LCs is on their radar.
What did I do to my LC today?
I unlocked the hubs. Not sure we'll get much snow this week.