I think SegWit is a big deal. Why do you think it will be released during a minor version? It is the biggest change for many years.
Maybe because I do an adequate amount of research before posting? The developers have stated that it is coming within a minor version and that other things are planned for 0.13. Keep in mind that the next major version isn't going to to be released soon (the aim is 6-7 months after each major release). I would also like to add that I can't be 100% certain in this case.