It depends on how A&H does their version numbers. Version 1.98 is 1 higher/newer than version 1.97, not 0.01 higher. Versions might look like numbers, but they aren’t. Not in the way we normally think about numbers, anyway. There are several versioning schemes out there, so the answer to “what’s after 1.99” depends on what A&H uses, but I think most of them would say that “1.100” is the next version.
