According to Xataka.com (English version), next month at Mobile World Congress there is said to be an Ubuntu convergence tablet on display.
This isn't a huge surprise as Canonical has participated in Mobile World Congress (MWC) the past few years and they've used it to showcase their mobile wares in the past. This tablet is said to be running a preliminary version of Ubuntu 16.04 "Xenial Xerus", which isn't much of a surprise either since it's the current Ubuntu development cycle and will be a Long Term Support release.
A few months back it was reported that a converged Ubuntu Phone was delayed into 2016, but there's no word if that will make a premiere at MWC or if a tablet has taken the spotlight for telling the Ubuntu convergence story or is simply a complementary device.
BQ is reportedly the manufacturer of this first official Ubuntu Tablet and is based off their M10 design with 64-bit ARM SoC and 2GB of RAM. More details next month from MWC 2016 that is taking place in Barcelona from 22 to 25 February.