I got a press release in my inbox just now, telling me about an app that is compatible with OS X 10.10 Yosemite.
“This latest version of APPNAME adds support for Yosemite, OS X 10.10.”
Sorry, you’re wrong. Your app may be compatible with the latest beta of Yosemite, but claiming that it’s compatible with Yosemite is misleading. Until the GM – the golden master, the final release version – is released, no one can be sure that their apps are compatible with an operating system.
Naturally, this is just a marketing ploy from someone who wants to garner a bit of attention, but it’s bullshit.
On the other hand, I have seen developers tweeting about apps that are compatible with the Yosemite public beta; that’s fair. But don’t suggest that your app is compatible with an operating system that’s not been released yet.
Doug Adams says it very well:
I make no guarantees as to the reliablity of any software authored by me when operated under a pre-official-release beta version of the operating system.
Yosemite-compatible software will be clearly labeled as such. Otherwise, don’t presume any script or app has Yosemite compatibility at all until the official release date in the Fall.