Well, they DID claim it was updated, LOL!
Their editor needs to be more careful, then! LOL
As one who uses Mavericks, Win7, and CentOS Linux for typically 12 hours every day, who has avoided Win8.x as much as possible, and who has used the Tech Previews of Win10 enough to gain an impression and draw some conclusions... I personally think that while Win10 is perhaps not an "apology" for Win8 (after all, the underlying OS is quite good), it is at best an attempt to correct some of the more egregious faults in the godforsaken Win8 Metro UI.
We must be fair and admit that Win7 was just such an attempt with regard to the egregious mistakes of Vista, and it worked extremely well. Win7 is deservedly very popular (it's my all-time favorite Windows). But Win10 has a tougher row to hoe. Win8 was an abortion, in many senses.
But on the Apple side... Personally I'm not at all fond of the "flat look" of Yosemite, which is why I intend to leave my personal machines at Mavericks as long as possible (and my oldest machines are still at Snow Leopard; I might take them up to Lion but it's kind of who-cares at this point).
I'm kind of pissed off at Apple for dropping the beautiful look of the pre-Yosemite Mac UI. It pleases me every time I log in. I really don't like this reversion to the Win3.1 look, on the part of both Apple and Microsoft. I understand its usefulness in a handheld device, of course, but WHY on a desktop or laptop where there's plenty of horsepower and battery available???
I expect stupid decisions from Microsoft. I don't expect them from Apple.
Oh, well, it's Mavericks and Win7 (and CentOS) for me until they're no longer supported. I'll live without the extra features.
As to a head-to-head comparison between Win10 and Yosemite, personally I am pretty ho-hum, but an objective technical face-off would make a useful article to ping for both lists.