What benefits would I see upgrading from 14.04 to 15.04 and what are some caveats? [duplicate]
Ubuntu 14.04 was released as an LTS (Long Term Support) where it is stable, and the patches / updates will continue for years. Ubuntu 15.04 is a non-LTS release, and will only be supported for a short time, like a only a few months. I prefer the LTS releases for my everyday usage system, and when I want to test things out I use the non-LTS releases to check out the newer features that can be in future releases. I just have to remember that non-LTS are not stable, and can be prone to crashes and very little hardware support. Hope this helps.