Just to satisfy my own curiosity, and refresh my memory, I ran tests on Oneiric, Precise, Quantal, and Raring i386 images and a summary of results is as follows:
Oneiric; The 11.10 final image offers upgrade, reinstall, and downgrade - BUT all are referred to as upgrades.
Precise; The 12.04 final, 12.04.1 final, and 12.04.2 (20130117.1) images only offer upgrades - no reinstall or downgrade.
Quantal; The 12.10 final image offers upgrade and reinstall, named appropriately - but no downgrade.
Raring; The 13.04 (20130119) image offers both upgrade and reinstall - BUT both are referred to as upgrades.
I'm not sure that's helpful at all but thought it was worth sharing.
Just to satisfy my own curiosity, and refresh my memory, I ran tests on Oneiric, Precise, Quantal, and Raring i386 images and a summary of results is as follows:
Oneiric; The 11.10 final image offers upgrade, reinstall, and downgrade - BUT all are referred to as upgrades.
Precise; The 12.04 final, 12.04.1 final, and 12.04.2 (20130117.1) images only offer upgrades - no reinstall or downgrade.
Quantal; The 12.10 final image offers upgrade and reinstall, named appropriately - but no downgrade.
Raring; The 13.04 (20130119) image offers both upgrade and reinstall - BUT both are referred to as upgrades.
I'm not sure that's helpful at all but thought it was worth sharing.