Well mate, they have to compete with others, we are all whining about this 6 month old cycle, I myself as well whine about it,
but they cannot show up with nothing at IFA knowing that Samsung is gonna present their Note 4. They are clearly trying to achieve best smartphone of the year thing, but I think they should have gone same as Samsung, in first half of the year the Z line, second half Ultra line maybe.
It's kinda annoying when they are upgrading the same model twice per year mostly because no new things, especially now this z3.
They probably modded camera now how it should be, added HQ to speakers and remote control for ps4, I doubt we will see those things in z2 officially. But then again, we are being late with 4.4.4 with a good reason, most probably because those features, or at least some of them, are gonna hit z2.
And I'm being sceptic with this new IP rating. It's making me think what has changed, and does z2 suffer from building issue regarding waterproof, more and more I see threads about phone leaking water inside even tho I never experienced that, but that's mostly because my device was only few times exposed to heavy rain, but never dunked in water, nor it will ever be since it slipped out of my hand and I had to replace back cover.