Upgrading from 14.04 LTS to 14.10 point release: Failed to Calculate Upgrade

[MathUHenry]

Upgrade options from the current LTS are for either the next LTS or the subsequent point release. The next LTS is not yet available and the subsequent point release is "failing to calculate", presumably because it is no longer supported. If my interpretation of the problem is correct, then that suggests an end-user design flaw, id est: There is a (large) window of time in which the LTS may be upgraded. Beyond that, if new features are needed, upgrading is no longer an option and a complete reinstall is required.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
Uname: Linux 3.19.0-47-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Jan 20 13:12:15 2016
InstallationDate: Installed on 2015-09-04 (138 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-20 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update.manager.release.upgrades: 2016-01-17T12:09:39.025454

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1534374, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.