Likely to arrive in developer-preview form at Apple’s Worldwide Developers Conference this summer, OS X 10.10, codenamed Syrah, is receiving its final UI touches led by Human Interface chief Jonathan Ive.

A report covering iOS 8 and OS X 10.10 in anticipation of WWDC14 this June (with many more leaks likely on the way) reveals that Apple has ambitious plans with the user interface refresh planned for OS X 10.10. Rather than focusing on features, the new OS “will focus on aesthetics”.

These sources reportedly said that “Apple Senior VP of Design Jony Ive is leading a ‘significant’ design overhaul for OS X, and the new design will be the operating system’s cornerstone new feature (none of the mockups online, like the one above, are a good indicator of what to expect).”

The sources further said that “The new design will not be as stark as iOS 7, but it will include many of the flat elements and white textures instead of re-creations of life-like elements. The end-to-end redesign is said to be a top priority at Apple right now, with the specific details about the changes being sworn to extreme secrecy.”

New features set to make their way into OS X include Siri and support for iOS AirDrop, though it remains to be seen if they will make it into version 10.10, which is the planned update for this year.

The same report holds that “Apple is also working on some lower-cost iMacs and standard MacBook Air/Pro updates,” but these don’t have a definitive launch date set.

As far as iOS 8 is concerned, no new details are provided other than what we already know. Apple has a Healthbook application planned for it and an updated version of Maps. The codename for iOS 8 is Okemo, and there will be a preview of the software offered to developers in June at WWDC.

The Healthbook application “is capable of tracking data for various bloodwork details, heart rate, blood pressure, nutrition, blood sugar, sleep, respiratory rate, oxygen saturation, weight, and activity,” which lends credence to rumors about Apple launching a sensor-packed wrist-worn device.

Healthbook will also include an Emergency Card that holds important health information about the user, in case he / her becomes lost or loses consciousness, complete with “contact information, weight, and a list of medication prescriptions.”