Apple also warned users that some Yosemite features, including several that Federighi demonstrated Monday during the WWDC keynote, will be unavailable in the preview. "Since the beta software is unfinished, some new features will not be available, such as phone calls, SMS, Handoff, Instant Hotspot, and iCloud Documents," Apple said.
Registered developers can obtain the first preview of Yosemite today.
Mac owners may sign up for the Yosemite program on Apple's website.
Computerworld's Ken Mingis and IDG Enterprise's Keith Shaw discuss what they liked (and didn't) at Apple's Worldwide Developer's Conference keynote.
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