I have been doing this for quite some time now before the next cycle begins.
Here's so far:
Code:
Hit http://ca.archive.ubuntu.com devel-backports/restricted Translation-en
Hit http://ca.archive.ubuntu.com devel-backports/universe Translation-en
Fetched 263 kB in 14s (17.6 kB/s)
Reading package lists... Done
W: Conflicting distribution: http://archive.canonical.com devel Release (expected devel but got precise)
W: Conflicting distribution: http://security.ubuntu.com devel-security Release (expected devel-security but got vivid)
W: Conflicting distribution: http://ca.archive.ubuntu.com devel Release (expected devel but got vivid)
W: Conflicting distribution: http://ca.archive.ubuntu.com devel-updates Release (expected devel-updates but got vivid)
W: Conflicting distribution: http://ca.archive.ubuntu.com devel-backports Release (expected devel-backports but got vivid)
ventrical@ventrical-luntiy-betatest:~$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
ca-certificates libnm-glib-vpn1 libnm-glib4 libnm-util2 network-manager
5 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 1,178 kB of archives.
After this operation, 1,024 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ca.archive.ubuntu.com/ubuntu/ devel-updates/main libnm-util2 amd64 0.9.10.0-4ubuntu15.1 [134 kB]
Get:2 http://ca.archive.ubuntu.com/ubuntu/ devel-updates/main libnm-glib-vpn1 amd64 0.9.10.0-4ubuntu15.1 [14.4 kB]
Get:3 http://ca.archive.ubuntu.com/ubuntu/ devel-updates/main libnm-glib4 amd64 0.9.10.0-4ubuntu15.1 [84.7 kB]
Get:4 http://ca.archive.ubuntu.com/ubuntu/ devel-updates/main ca-certificates all 20141019ubuntu0.15.04.1 [191 kB]
Get:5 http://ca.archive.ubuntu.com/ubuntu/ devel-updates/main network-manager amd64 0.9.10.0-4ubuntu15.1 [754 kB]
Fetched 1,178 kB in 4s (290 kB/s)