if I install new 12.xx alpha/beta, will I need a fresh install of 12 LTS -- or can I upgrade without losing my config.?? Thx

Dear UBUNTU,

I will be loading a Ubuntu OS to a new system soon.

My interest is in the LTS soon to be released.

If I load the 11.10 or the 12.xx beta/alpha, will I be able to upgrade to the 12 LTS?

Or must I perform a clean installation?

FYI this will be the Inspiron duo - the tablet, netbook convertible thing.

I'd like to know for my other systems too, as that is an expendable device at the moment.

Thank you,

J.G.