[Bug 1983553] [NEW] Better documentation for Prompt=normal vs lts

[Alkis Georgopoulos]

Public bug reported:

The documentation in `cat /etc/update-manager/release-upgrades` mentions
what Prompt=normal and Prompt=lts mean.

It doesn't cover this difference though:

a) 20.04 installations with Prompt=normal will get upgraded to 22.04 as
soon as it's out (April, https://changelogs.ubuntu.com/meta-release).

b) 20.04 installations with Prompt=lts will get upgraded to 22.04 when
22.04.1 is out (August, https://changelogs.ubuntu.com/meta-release-lts).

This is a sane thing to do, but it's not the only possible sane thing to do, it shouldn't be implied.
Please make it explicit by adding a couple of documentation lines in that file.

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  The documentation in `cat /etc/update-manager/release-upgrades` mentions
  what Prompt=normal and Prompt=lts mean.
  
  It doesn't cover this difference though:
  
  a) 20.04 installations with Prompt=normal will get upgraded to 22.04 as
  soon as it's out (April, https://changelogs.ubuntu.com/meta-release).
  
  b) 20.04 installations with Prompt=lts will get upgraded to 22.04 when
- 22.04.1 is out (May, https://changelogs.ubuntu.com/meta-release-lts).
+ 22.04.1 is out (August, https://changelogs.ubuntu.com/meta-release-lts).
  
  This is a sane thing to do, but it's not the only possible sane thing to do, it shouldn't be implied.
  Please make it explicit by adding a couple of documentation lines in that file.

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https://bugs.launchpad.net/bugs/1983553

Title:
  Better documentation for Prompt=normal vs lts

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  The documentation in `cat /etc/update-manager/release-upgrades`
  mentions what Prompt=normal and Prompt=lts mean.

  It doesn't cover this difference though:

  a) 20.04 installations with Prompt=normal will get upgraded to 22.04
  as soon as it's out (April, https://changelogs.ubuntu.com/meta-
  release).

  b) 20.04 installations with Prompt=lts will get upgraded to 22.04 when
  22.04.1 is out (August, https://changelogs.ubuntu.com/meta-release-
  lts).

  This is a sane thing to do, but it's not the only possible sane thing to do, it shouldn't be implied.
  Please make it explicit by adding a couple of documentation lines in that file.

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