Built-in waveform monitor indicates HDR brightness levels up to 10,000 nits.

Output video to third-party HDR monitors using third-party I/O devices.

Import, grade, and deliver High Dynamic Range (HDR) video as Rec.

Color presets are now located in the effects browser for skimmable preview and fast search.

Speed through color correction using new keyboard shortcuts for color adjustments and role-based timeline navigation.

Adjust color corrections over time with precise keyframe controls.

Apply custom LUTs from popular color grading apps and sites.

Balance Color command includes an eye dropper for manual white balance.

Use the eye dropper in the color and hue/saturation curves to quickly sample parts of an image for adjustment.

Hue/saturation curves let you select a specific hue or brightness level to make adjustments while leaving other parts of the image unchanged.

Color curves enable ultra-fine adjustments using multiple control points to change color and contrast.

Powerful new color wheels improve upon traditional wheels with integrated sliders to adjust hue, saturation, and brightness.

Dedicated color tab in the inspector provides one location for all color controls.

Support for monoscopic and stereoscopic 360° video.

Place any graphic, still, or video into a 360° project, then reposition and resize to fit perfectly into the 360° scene.

Edit 360° video into a non-360° project and animate the pan, tilt, and zoom.

Use the Horizon overlay to easily change the orientation of 360° video right in the viewer.

Use the 360° patch to instantly remove cameras and rigs from the scene.

Share 360° video directly to YouTube, Facebook, and Vimeo.

Add 360° effects including blurs, glows, and more.

Option to track movement of a VR headset in the 360° viewer in Final Cut Pro.

Open the 360° viewer to simultaneously monitor headset and equirectangular views while editing.

Output 360° video to a connected VR headset*.

Import and edit 360° equirectangular video in a wide range of formats and frame sizes.

For me, the most interesting upgrade is the ability to (finally) keyframe color correction. I don't plan to upgrade for awhile, it's full of features that I don't really need and I'll wait to hear about all the new bugs.

Final cut pro 10.3.4 sierra tutorial