Comment 4 for bug 1348227

I went through the TEST CASE provided in the description of this bug and confirmed that the use of update-manager is now advised:

$ apt-cache policy update-manager
update-manager:
  Installed: 1:0.156.14.17
  Candidate: 1:0.156.14.17
  Version table:
 *** 1:0.156.14.17 0
        500 http://ca.archive.ubuntu.com/ubuntu/ precise-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1:0.156.14.16 0
        500 http://ca.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
     1:0.156.14.5 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
     1:0.156.14 0
        500 http://ca.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

$ hwe-support-status --verbose

Your current Hardware Enablement Stack (HWE) is going out of support
on 2014-08-07. After this date security updates for critical parts (kernel
and graphics stack) of your system will no longer be available.

For more information, please see:
http://wiki.ubuntu.com/1204_HWE_EOL

There is a graphics stack installed on this system. An upgrade to a
supported (or longer supported) configuration will become available
on 2014-07-16 and can be invoked by running 'update-manager' in the
Dash.