Peplink SUS-SOHO-T Pepwave Surf Soho MK4 Router

Hello! I have few questions for the future router that i would like to buy:

Is there any expectations for - Peplink SUS-SOHO-T Pepwave Surf Soho MK4 Router
I can see that MK3 is older product now and i was wondering as WPA3 is on its way also 5G too…Do we expect soon any development?

And one issue with buy your older products:

P.S Peplink SUS-SOHO-T Pepwave Surf Soho MK3 Router - i would like to buy from Bulgaria but i am not able to find any re-seller or so. Is that mean that i will not get proper supprot in case of a problem if i got it directly from online reseller?