It looks like Kala brought a prototype of its new upright uBass to Bass Player Live this past week.
From This Clip, it looks like the new uBass upright may have taken some inspiration from the Hofner Beatle bass. It also looks to be a solidbody. From the clip, the scale looks to be about the same as a short scale bass, possibly 28″ or 30″. This one looks to have Pahoehoe strings on it.
I bet it would sound great with metal strings.