Final release of Ubuntu 14:04 LTS expected to be present on 17 April 2014. Thus, Canonical released Ubuntu 13:10 after a couple of days ago that also has announced the code name of Ubuntu 14:04 LTS, and today re-announced release schedule "Trusty Tahr" the nickname for the next Ubuntu LTS.

14:04 Ubuntu LTS code name Trasty Tahr
Almost no lag, after the final release of Ubuntu 13:10, immediately begin the process of developing a canonical Ubuntu 14:04 LTS. In public, the development of Ubuntu 14:04 LTS will be available in the beta phase from February to March 2014. But as usual, those who wish to follow a faster development process that can download Ubuntu LTS daily build of the range will be available in mid-December.

Here is the release schedule of Ubuntu 14:04 Trusty Tahr:

    December 19, 2013 - Alpha Release 1
    January 23, 2014 - Alpha 2 Release
    27 February 2014 - Beta Release 1
    March 27, 2014 - Final Beta Release
    10 April 2014 - Release Candidate
    17 April 2014 - 14:04 Ubuntu LTS Final Release