ZDNet posted a preview on the upcoming beta of Ubuntu 14.04 LTS Trusty Tahr

It's becoming a familiar story for Ubuntu desktop releases. Back in October 2011 Mark Shuttleworth set some ambitious targets for Ubuntu 14.04 LTS Trusty Tahr, and later announcements indicated that these would be achieved through a fully converged code base, a cross-format UI and the ability to run cross-format apps.

But as the release date approaches, perhaps not unreasonably for an LTS, things have been scaled back. The emphasis now is on reliability, while the company continues to pursue its goals in the mobile and tablet markets on a parallel track. Shuttleworth now estimates that desktop/tablet/smartphone convergence won't be reached until Ubuntu 15.04 or later.

  Ubuntu 14.04 LTS Trusty Tahr, Beta 1 preview: Convergence deferred