simutrans maintainer is busy....
Created attachment 137653 [details] games-simulation/simutrans-0.99.16 version bump
*** Bug 200987 has been marked as a duplicate of this bug. ***
We're supporting the stable release of simultrans. There's no plan to add the beta versions. See http://forum.simutrans.com/index.php/topic,343.0.html for upstream's take on the releases.