Oggi è uscita la quinta versione alpha di Ubuntu, come indicato nella seguente 
pagina.
Ricordo che la versione alpha è la versione di sviluppo di Ubuntu, che diventerà in seguito stabile.
Quindi non utilizzatela per un uso quotidiano, in quanto potenzialmente soggetta a bug critici che potrebbero portare anche alla perdita di dati.
Qui c’è l’annuncio:
Hello Ubuntu developers,
Welcome to Intrepid Ibex Alpha-5, which will in time become Ubuntu 8.10.
Pre-releases of Intrepid are *not* encouraged for anyone needing a stable
system or anyone who is not comfortable running into occasional, even
frequent breakage. They are, however, recommended for Ubuntu developers and
those who want to help in testing, reporting, and fixing bugs.Alpha 5 is the fifth in a series of milestone CD images that will be
released throughout the Intrepid development cycle. The Alpha images are
known to be reasonably free of showstopper CD build or installer bugs, while
representing a very recent snapshot of Intrepid. You can download it here:http://cdimage.ubuntu.com/releases/intrepid/alpha-5/ (Ubuntu)
http://cdimage.ubuntu.com/edubuntu/releases/intrepid/alpha-5/ (Ubuntu Education Edition)
http://cdimage.ubuntu.com/kubuntu/releases/intrepid/alpha-5/ (Kubuntu)
http://cdimage.ubuntu.com/xubuntu/releases/intrepid/alpha-5/ (Xubuntu)See http://wiki.ubuntu.com/Mirrors for a list of mirrors.
Alpha 5 includes a number of software updates that are ready for large-scale
testing. Please refer to http://www.ubuntu.com/testing/intrepid/alpha5 for
information on changes in Ubuntu.This is quite an early set of images, so you should expect some bugs. For a
list of known bugs (that you don’t need to report if you encounter), please
see: http://www.ubuntu.com/testing/intrepid/alpha5If you’re interested in following the changes as we further develop
Hardy, have a look at the intrepid-changes mailing list:http://lists.ubuntu.com/mailman/listinfo/intrepid-changes
We also suggest that you subscribe to the ubuntu-devel-announce list
if you’re interested in following Ubuntu development. This is a
low-traffic list (a few posts a week) carrying announcements of
approved specifications, policy changes, alpha releases, and other
interesting events.http://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-announce
Bug reports should go to the Ubuntu bug tracker:
https://bugs.launchpad.net/ubuntu
Enjoy,
—
Steve Langasek
On behalf of the Ubuntu release team
saluti