2008 and R2 are still in a supported phase of life. It's the "exorbitant support fee" phase. Nevertheless, you can still get Microsoft support for the two after the "EOL". It's more an end-of-public life
Aye, and by the same technicality you can still get support for 2005.
Similar with PG I assume. You could always pay someone an expensive contracting fee to support your use of an older version than is publicly supported.