Usually in the stable versions of these distributions, Blender 3D is often outdated.
Ubuntu users can discuss this here:
https://bugs.launchpad.net/ubuntu/+source/blender/+bug/1375333
From the above link has been open the next request for sync:
https://bugs.launchpad.net/ubuntu/+source/blender/+bug/1375342
Packing and maintain packages requires personal time and work. So you can go to launchpad and argue about it, but please be polite and adult.
PS: Please to Windows users who typically make nasty comments in this kind of threads. There are many other simple ways to use new Blender versions in Ubuntu. What we want to discuss is about the version in the official Ubuntu repository and make it even easier for the average user. In addition, other Linux distributions have the newest versions of Blender in their repositories.