HTTPS: // news.cnblogs.com/n/654092/ have support extended support period of four years plus five years
Ubuntu 19.10 lifecycle will end in July this year, the largest version within a period of time is Ubuntu 20.04 LTS, its major updates and improvements will terminate in 2030.
Ubuntu 20.04 is the first eight LTS version, scheduled for release on April 23 next year. Canonical will release as part of the 10-month release schedule and development of 25 weeks of April releases 27 weeks to develop a timetable to guide the development of LTS, it is the 27 weeks of the release schedule of Ubuntu 20.04 development life cycle to follow. As shown Ubuntu wiki:
https://wiki.ubuntu.com/FocalFossa/ReleaseSchedule
From this table, we can see a few key nodes :
February 27: feature freeze
Ubuntu team to stop the introduction of new features, package and API, they began to focus on development version of the repair bug.
March 19: freeze the user interface
At this time, other updates the user interface does not occur. Subsequently, document processing will begin, including the latest screenshots.
March 26: document string freeze
After completing all the features and user interface updates, stop in the document to create and modify strings. If you need to change the string at a later stage, you can add to the availability of approved teams.
April 2: Beta freeze
Ubuntu developers to experience the beta version before the official release of Ubuntu bug or bug fixes and make recommendations.
April 9: kernel freeze
Kernel is the kernel update freeze deadline.
April 16: The final freeze
The final freeze is the penultimate stage of the final version, the team confirmed that all repair.
April 23: The final stable version
Officially launched the final stable version.
But as we have previously reported the milestone nightly builds Current versions began to appear not listed in this schedule.