Hi there,

"i.e. we update a development instance to to Washington DC, can we revert it back to a previous version?"

Would simply cloning your production (which is on the previous release) over to development be an option for you? Personally I've never performed a rollback at customers, only fix forward. Or where it concerns upgrades/plugins on subproduction > just perform a system clone or you could choose to put a backup back. On production never do such, only fix forward.