Ubuntu 14.10 (Utopic Unicorn), Beta 1 preview: No big changes
Despite optimistic 2011 predictions of a fully converged cross-platform OS running Mir and UnityNext (8) by 2014, Ubuntu 14.10 is set to retain X Windows and Unity 7. Based on this beta, it seems there will be no big changes in 14.10, although upgrading is always worthwhile.