SXTsq 5 ac seems to be out of stock everywhere in the UK. Is this just due to Covid, are new units incoming? Doesn't seem to just be the 5 ac either, most SXTsq products seem to be quite difficult to get hold of right now and the 60ghz unit appears to have been replaced entirely by the new Cube lite 60, is the whole form factor getting retired?

If you can find the product that you need here it means that MikroTik continues his production and is not discontinued. Most probably if a product not have in your country is for Covid. You need to ask to your local distributor for more details.

Regards.