[ Thanks to dave for
this link. ]
“Note: This is a beta release. Do not install it on
production machines. The final stable version will be released on
October 29th, 2009“Important Notes Before Upgrade
* Take a complete Back up all your data. There is no guarantee
that all will go well* Be sure that you have all updates applied to Ubuntu 9.04
before you upgrade“To upgrade from Ubuntu 9.04, press Alt+F2 and type in
“update-manager -d” (without the quotes) into the command box click
on Run.Once we have got stable release you just remove -d
option.”