The authors are pretty conscientious about basing the book on tech that's mostly here to stay. For example, camlp4 is not included because it's on it's way out.

The authors are pretty conscientious about basing the book on tech that's mostly here to stay. For example, camlp4 is not included because it's on it's way out. So, there's no way to say for sure, but I think there's a reasonable chance it sticks around.