Is no reboot kernel patching enabled in 16.04?

Ubuntu has livepatch, which is a livepatching service for Ubuntu 16.04.

• https://www.ubuntu.com/server/livepatch
• http://insights.ubuntu.com/2016/10/20/live-kernel-patching-from-canonical-now-available-for-ubuntu/

It is now working

https://auth.livepatch.canonical.com/?user_type=ubuntu-user

sudo snap install canonical-livepatch
sudo canonical-livepatch enable TOKEN_FROM_ABOVE_LINK

Update:

On 20th October, 2016 Canonical officially announced the support for no reboot kernel patching, freely available on maximum three machines for a single user, check the article for details.

Yes, kernel hot patching is enabled in Ubuntu 16.04.

It was actually introduced in the first 4.0 series kernel on Ubuntu, with the 15.10 release, in October, 2015.

In a nutshell, any Ubuntu release currently having a official repository provided kernel (and mainline too) with version >=4.0 has live patching facility.

Note: Just to be clear, Ubuntu 16.04's kernel has the live patching capability, but Ubuntu offically does not provide any hot patch (as of now) as this answer mentioned.