Oh yes most definitely, RoR looks like it is going to take off. Once the people at the top of the programming field start forgetting about a language it does tend to go downhill from there unfortunately.
However you still do get avid supporters who continue to use it and program little applications in it which keep some older and less used languages going.
Also, when the community starts to dwindle, more people leave said community for a more well supported language. This works the same for forums software, CMSs, blogs etc as well
.