This "revelation" is a bit surprising for me, as i thought the Ancients were wiped out.
If this was planned in any form, there should have been dropped
subtle hints in FS2 that there's a
chance, that some Ancients survived.
But the quote in the OPs post, indicates hearsay. So i don't give much about it, until :V: officially confirmes.
Which :V: wont do. Back when FS1 was released, the Computer magazines here, always compared FS with B5, which seemed heavily inspired by the show.
If :V: was inspired by B5 and the Shadow/ Vorlon conflict, then we'd have Shivan / Ancients war, with inverse roles, e.g. the Ancients play the role of the Shadows, which vanished off the radar for 1000 years and then to return to spread chaos.
In FS, the Ancients would return to help fight the Shivans. Considering that according to FS2 the ancients were wiped out, i assume this idea was dropped.
Just theories.