WHY not? its completely worth it if it is the only choice available to you. IIIT pune is a great choice as compared to all those private institutions who do nothing but advertise great things about them but once you take admission thre you find nothing at all. On the other hand inspite of being new iiit pune despite of being a new one will give you a brand name of iiit and also great exposure to you moreover since the institute is new so the new and updated syllabus will give you an edge in future.