I was wanting to put my MK2 up for sale but have no idea when the MK3 will be back instock anyone at NI have any idea
There will be stock for the pre-ordered S88 MK3. For later stock, it's too early to tell.
If you pre-ordered your S88 MK3 through NI:
The units have made their way on ocean to the Americas and are in the process of distribution. That sounds like the correct timeline to me.
It has taken significantly longer than anticipated to ship units around the world. For instance, container ships cannot easily, safely and efficiently pass through the Suez Canal at the moment, and many are opting to sail all the way around the tip of South Africa, adding significantly to journey times. Added to which there is a backlog, which keeps changing, which in turn has continue to change for us, as a customer of such shipping services.
It's been enormously frustrating, and I'm sorry that you've had to deal with this too. The impact of various geopolitical situations has certainly had a knock on effect to companies like ours, some of which is truly beyond our control.