In fairness, I recall there being a pretty similar feeling about "Pokemon Gray" and look how that turned out.
As much sense as Z makes and as much as everyone (including me) has assumed it's coming, it's sure taking a long time for them to actually so much as announce it, which is starting to make me doubt that anything is happening and think that maybe we
will jump right to Gen 7. That would be severely disappointing since the "third versions" almost always improve upon replay value through adding postgame content and that's one of the biggest complaints I've seen about Gen 6. It also doesn't make much sense because...it's much easier to make that than a brand-new game and it's Pokemon so it'll still sell like hotcakes.
But if you look at the
gaps between the release dates for previous original versions and "third versions," it's typically ~2 years between releases, whereas if we take into account that Z would probably be announced at least 6 months prior to release, we're looking at it being close to 3 years since X and Y were released before Z is released even if it's announced very soon. That's a lot of speculation on my part that doesn't prove anything, of course, but it has me wondering if I've been making a faulty assumption the whole time nevertheless.