i haven't viewed this new al1x.

bot from the specs given in the website, only these differences which i posted before:

form the specs comparison, they are almost identical except frr al1x has rs232c connection and weighs less.
and i think there are 2 hdmi at the side, 2 at the back whereas ua6800x has all 4 at the back.
and based on ue630x android5->6; ua6800x android7->8, it is possible al1x coming with android8 may get upgraded to android9 if it gets widely accepted.

i already have the 2 older models, won't be getting al1x.

i trust it is just as good if not better - in terms of picture quality and the androidtv.