As a reminder, Greg Kroah-Hartman has announced that Kernel 3.19 has reached end of life (EOL), Kernel 3.19.8 being the last one available from its series. [To install Kernel 3.19 on Ubuntu 15.04, see THIS article.]
But as expected, Canonical’s Kamal Mostafa has announced that the Ubuntu Kernel Team will maintain Kernel 3.19 until July 2016, a version of Kernel 3.19 being used by default on Ubuntu 15.04 Vivid Vervet.
From the mailing lists:
“Canonical’s Ubuntu kernel team is pleased to announce that we will be providing extended stable support for the Linux 3.19 (3.19.8) kernel until July 2016 as a third party effort maintained on our infrastructure.”
Canonical does not have the habit of upgrading the Kernel on non-LTS systems, so Ubuntu Vivid will still use a version of Kernel 3.19 until it reaches EOL.