As you followed here on MacMagazine, Apple yesterday released the Developer Preview 7 version of OS X Yosemite. And, again, there are news to show in relation to our last compilation of screenshots.
Let's go?

New icons in System Preferences.

Browsing Versions of a file in the Time Machine interface.

Spotlight search running in dark mode (dark mode).

FaceTime preferences with the option of setting the default app for calls.

Dark mode menu (dark mode).

“Software Update” item removed from the apple menu, number of updates. | Via: MacRumors.
And some new cones:

Dashboard

Disk Utility (Disk Utility)

Migration Assistant (Migration Assistant)

Access to Keys (Keychain Access)

ColorSync Utility (ColorSync Utility)

Generic ZIP file
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Soon, more!