The dimensions are 1.29kg, 350mm tall, with a 60mm barrel. The barrel is the same size as the Anova One (so it will fit through the cooler lids and cambro lids I've cut out). And it's actually a bit smaller and lighter than the One.
I plan to keep my One as long as it keeps chugging along ... but it's nice to know there's a high quality replacement if ever needed.
My ideal kit would probably be an Anova Pro, plus a Nano for travel or for those rare times a 2nd circulator would be useful.