2012/2/24 Felipe I. Cañas <f.canas.s@gmail.com>
I could not find a roadmap on Liferea's website, and doing a web search on it
turned up a roadmap that was last updated during march 2004, which I'm guessing is not exactly up to date.

Is a current roadmap being maintained anywhere public?

No. There is no need for a roadmap as no one is developing at the moment.
Sorry to disappoint you!