just rename the latest unstable ebuild. Upstream marked this version stable!
its not only a rename. 2 oder 3 changes are made between rc1 and final version of aqbanking.
Created attachment 84598 [details] net-libs/aqbanking/aqbanking-2.0.0.ebuild Nope, we should add the yellownet use flag to build the aqyellownet backend (interface to the swiss postfinance bank institute)
Created attachment 88137 [details, diff] Patch to add USE=yellownet support I've generated a diff from the new ebuild (easier to apply in case of changes to the original ebuild) and sorted the USE flags.
FWIW, the upgrade from 1.9.11rc1 to 2.0.0 was perfectly smooth for me (tested with GnuCash, no rebuild required). I haven't set USE=yellownet, though.
done