[Bug 1901815] [NEW] Release 20.10 announced despite already running it

[Paul Menzel]

Public bug reported:

Ubuntu announces the 20.10 release, despite it running already. Probably
related to some poor integration of *oem-release* (purged) or *oem-
config* .

```
user at helmut-XPS-13-9310:~$ ssh helmut at 192.168.0.3
Welcome to Ubuntu 20.10 (GNU/Linux 5.10.0-rc1+ x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

0 Aktualisierungen können sofort installiert werden.
0 dieser Aktualisierung sind Sicherheitsaktualisierungen.

New release '20.10' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Tue Oct 27 16:47:23 2020 from 192.168.0.7
user at helmut-XPS-13-9310:~$ more /etc/os-release 
NAME="Ubuntu"
VERSION="20.10 (Groovy Gorilla)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.10"
VERSION_ID="20.10"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=groovy
UBUNTU_CODENAME=groovy

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

-- 
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Foundations Bugs, which is subscribed to update-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1901815

Title:
  Release 20.10 announced despite already running it

Status in update-manager package in Ubuntu:
  New

Bug description:
  Ubuntu announces the 20.10 release, despite it running already.
  Probably related to some poor integration of *oem-release* (purged) or
  *oem-config* .

  ```
  user at helmut-XPS-13-9310:~$ ssh helmut at 192.168.0.3
  Welcome to Ubuntu 20.10 (GNU/Linux 5.10.0-rc1+ x86_64)

   * Documentation:  https://help.ubuntu.com
   * Management:     https://landscape.canonical.com
   * Support:        https://ubuntu.com/advantage

  0 Aktualisierungen können sofort installiert werden.
  0 dieser Aktualisierung sind Sicherheitsaktualisierungen.

  New release '20.10' available.
  Run 'do-release-upgrade' to upgrade to it.

  Last login: Tue Oct 27 16:47:23 2020 from 192.168.0.7
  user at helmut-XPS-13-9310:~$ more /etc/os-release 
  NAME="Ubuntu"
  VERSION="20.10 (Groovy Gorilla)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu 20.10"
  VERSION_ID="20.10"
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  VERSION_CODENAME=groovy
  UBUNTU_CODENAME=groovy

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