Confirm the issue here too on amd yakkety; while 'synaptic' have no problem to display that changelog
oem@u64:~$ sudo aptitude changelog ubuntu-desktop
[sudo] password for oem:
E: Cannot display changelog: Origin of ubuntu-desktop version 1.362 is unknown (maybe not an official Debian package; if it is, try to "update" package lists)
Confirm the issue here too on amd yakkety; while 'synaptic' have no problem to display that changelog
oem@u64:~$ sudo aptitude changelog ubuntu-desktop
[sudo] password for oem:
E: Cannot display changelog: Origin of ubuntu-desktop version 1.362 is unknown (maybe not an official Debian package; if it is, try to "update" package lists)