How Come I Cannot Download the Latest Ubuntu 15.04 Desktop?

[silver.bullet at zoho.com]

On Sat, 8 Aug 2015 11:08:55 +0100, Colin Law wrote:
>To upgrade from 14.04 to 15.04 you do not need the 15.04 image.  There
>should be an option in the Software Updater to do it, or you can do,
>in a terminal
>sudo do-release-upgrade

By hearsay a release upgrade could break even a well maintained install
based on official repositories only. At least developers of an Ubuntu
flavour once claimed this. Assumed a release upgrade for a well
maintained install based on official repositories only should never
cause trouble, I suspect that when using third party repositories
it could break an install.

So before performing a release upgrade the complete install should be
backed up.

-- 
"Time in North Korea is given by Korea Standard Time (UTC+09:00), but
will switch to Pyongyang Time on 15 August 2015, which is UTC+08:30." -
https://en.wikipedia.org/wiki/Time_in_North_Korea

Will there be a tzdata upgrade or does the already installed tzdata
automatically correct itself?
http://packages.ubuntu.com/search?keywords=tzdata

I'm a Pu-239 dealer and wonder if the appointment calendar
notifications will be corrected.

:D