Why is the life of Ubuntu 13.04 so short?

Canonical switched to a 9 month support plan for non LTS releases because back-porting bugs and package upgrades was consuming too much time for the company, since most users of non-LTS releases upgrade each cycle.

Source: Too much time wasted reading about Linux.


After further browsing, I found this :

Ubuntu 13.04 will only be supported for 9 months. Previous non-LTS releases were supported for 18 months. For more information, please read the announcements here or here.

The first link tells :

The rationale here is that it’s costing a lot of time to maintain all those releases for 18 months. It’s also causing a lot of load on the SRU team and on developers to ensure that upgrading from one release to the other won’t cause regressions due to fixes being SRUed only to a few releases.