I am using Ubuntu 10.04, with default applications. Now I have tested Ubuntu 11.04, but it is not a LTS version, so I want to upgrade evolution of 10.04 to 11.04, because the evolution in 11.04 is far better then evolution in Ubuntu 10.04.
There is an exising Launchpad bug report requesting a backport of Evolution v2.32 to 10.04.
The backport is not a simple process:
This PPA exists purports to do just this upgrade.
However heed this maintainers warning:
Have a valid disk-image that you can return to if the PPA makes your system unstable