Ubuntu announced their own display server project: Mir

[Bill Spitzak]

This article seems to be based on a different source than the mir 
announcement:

http://www.networkworld.com/news/2013/030413-canonical-mir-267354.html

According to an official blog post from Thomas Voss, Canonical client 
technical architect...

"In the case of Weston, the lack of a clearly defined driver model as 
well as the lack of a rigorous development process in terms of testing 
driven by a set of well-defined requirements gave us doubts whether it 
would help us to reach the 'moon,'" he wrote.