iOS 8 and Yosemite work together unlike any other operating systems Apple’s ever created, but after removing one of Continuity’s most promising new features – the ability to send and receive SMS texts from Messages on a Mac – Apple has restored the feature to OS X Yosemite slightly ahead of schedule.
Apple removed the feature from the Yosemite beta earlier this month, stating it would be available again in October, but it looks like today’s Yosemite GM has restored SMS Continuity to iMessages
Here’s how to enables it from an iPhone running iOS 8.1 beta 1: