I would like to hear some more people's opinions; cc:ing Eric and Karl. Well, since you asked, it's not a big issue to me, but I am not a fan of 3-part versions. In addition to Paul's points: 1) What I've noticed is that they set up various expectations about releases which, in practice, are rarely borne out, as Paul (I think) said. 2) I also find that they become an excuse for developers to make incompatible changes ("it's a new major version", or "it's a feature release", or whatever). When it comes to autotools, any incompatibilities are, IMHO, greatly undesirable. Incompatibilities introduced in a hypothetical 2.0 release are just as bad, and painful to deal with, as ones introduced in a hypothetical 1.11.12 release. 3) Finally, in general I see people using (wanting to use) the latest release regardless of how it's labeled, because, in general, that's where precious maintainer development and support time goes. In general, there is no realistic long-term option except to move to the latest release. Overall, it seems simpler by far to just increment the number. 2.70 being called 2.7 seems like a different problem. The easiest way I've found to get around it is to simply skip minor release numbers that end in zero. It's annoying to do that, but it's even more annoying to have to "explain" to people that 70 != 7. Regarding Automake ... I'm not sure if you're talking about the recent releases promulgated mostly by me (except Jim made the actual releases) which included (some tiny) "features". If so, yes, I guess so. I never even thought about it, honestly. I don't really agree with the "only bug fixes" definition of third-point releases (1.16.2 to 1.16.3 or whatever). Making any release (of autotools) is such a significant event, with major ramifications for users, I think it is much better to include small, new, compatible "features" even when it doesn't fit some arbitrary semantic scheme. By postponing changes/features to some hypothetical future "feature" release, the result is (a) those changes don't get tried, (b) the future release may or may not ever come about (like all the stuff for Automake 2.0, which as far as I can see is not going to happen in the foreseeable future), and (c) if that future release does happen, it's almost guaranteed to have problems, because of (a). If it were me, I would never have started automake down the path of three-part releases in the first places, but now that it is, changing it feels unnecessary. With all releases of all autotools, what seems by far the most important thing to me, regardless of how a release is labeled, is compatibility. --best, karl.