It was previously speculated that Handoff, the new “Continuity” feature shipping with both iOS 8 and Mac OS X Yosemite would require the more recent Bluetooth 4.0 (LE) specification, and new evidence seen in the second beta of Yosemite released today suggests that that may be the case.
The feature, which allows users to quickly and easily move their work between operating systems in real time, will more than likely only work with the systems seen in green in the graphic above. Bluetooth 4.0 was first introduced in the 2011 MacBook Air and Mac mini, and has slowly made its way to Apple’s other hardware.
As for iOS, all of the devices that will support iOS 8 have support for Bluetooth 4.0 with the exception of the iPad 2.
There was debate about whether or not this would truly be the case, but a new screen seen in System Information in the latest build of Mac OS X Yosemite lists “Continuity” capability under the Bluetooth category:
As reported by many members of the MacRumors community, this “Continuity Supported” listing falls in line with the above graphic, meaning that indeed only Macs with support for Bluetooth Low Energy will have support for Continuity.
Notably, while this seems to be case at the current time, Apple could very easily change the requirements in the future.