The Ubuntu countdown had nothing to do with HTC but at least sparked some good speculation. Canonical has announced that a tablet OS is also on the way. Most likely to hit in early 2014. Developers will have the chance to start playing with the tablet version of Ubuntu on either the Nexus 7 or Nexus 10 starting this Thursday, February 21st when they also open up the developer preview of their smartphone OS.
Below is a video of Mark Shuttleworth of Canonical who goes into great detail of what Ubuntu will have to offer.