I doubt they will. Its possible an OVA might come out or some kind of holiday special if they want to. The thing with picking up a story thats ended and starting it back up again is that it tends to ruin it. For example, Dragon Ball GT is a failure in my eyes. The series ended with DBZ but the creator was basically forced to make more which resulted into SS4 which was crap. Sometimes its best to leave it as it is. Inuyasha has well over 200 episodes (way longer than most series). Its the best choice for it to be over.