No, not abandoned.
Split really. Soitanen has one version, sorry but I've not followed those versions as he's updated and have no information as to what he has done or is planning.
E-pilot - the originator of this effort and this thread has another constantly updating version.
http://www.aesoft.net/temp/737-300.zipThese two versions are vastly different planes. E-pilots now has a custom hud, the mouse wheel operates dials, the tire sounds work better now, the ILS capture is much better now, ( watch the MFD to know when to LOC and GS-glideslope capture ) and the radios on the center console work and the various volume knobs too and loads of other improvements.
If you are using a version of flightgear that is 3.0 or later you will need to open instruments.xml and un-comment the comm 0 and comm 1 definition to hear ATIS, otherwise the plane works as is in 2Series flightgears.
Please read that again
--Ray
Ray St. Marie