I have to agree. This game seems to be selling great with very little media buzz even now. If they sell a lot of this game you can bet on at least a third one. They'll keep making similar RPGs as long as they make money. I only have three important questions.
1. Which company will get the job? I hope it's either Bioware, Obsidian, or both.
2. Will they finish the trilogy, answer the questions everyone has, and end the current storyline? I hope so and after that they could start a different story.
3. Will they wait to put it on the next gen system(s) or will they rush it out for next Christmas? I would imagine Microsoft would want it as an exclusive title with Halo 2 to launch the X-Box 2.