update manager not notifying about lts release

[Nils Kassube]

scar wrote:
> i'm on 10.04 and have my upgrade settings for 'lts releases only' yet
> i still haven't been told by update manager that 12.04 is
> available.....

From <https://help.ubuntu.com/community/PreciseUpgrades>:

| Note that if you're upgrading from 10.04 LTS, do-release-upgrade will
| complain "No new release found" until 12.04.1 is released. To force an
| upgrade, use the -d option.


Nils