Will Ubuntu 14.04 offer direct upgrade from 13.04 [duplicate]
There are two supported upgrade paths:
- From one stable version to the very next (including LTS), so you could upgrade 13.04 -> 13.10 -> 14.04.
- From one LTS to the next (12.04 to 14.04).
With the exception of case #2, upgrades that "skip" over one or more releases are not supported.