I'm no official on the matter but reading the new page in EITG all EIAS components moved to EIAS3D. WITH the exception that they also state that EITG will now have resources and focus on building a modeler. So to your question Tesla as we came to know it is still in EITG's capable hands.
"Will this company commit to write something to model as well or should I definitely desist and start learning something else?"
We haven't received any official word yet. I for one like EIM as well but decided to pick up Modo since various gigs use it. I recommend you add it to your arsenal. If the revised modeler brings technology to speed with some nice gems hidden inside then you may be on the waiting list. Ask in EITG forums and hopefully we get an update from them about their approach / progress.
