What kdenlive Refactored version will bring you

That version used to be planned for 18.12 but will more probably be 19.04

A new refactored timeline

Split Audio/Video

We have changed the way timeline tracks work. Each track is now either audio or video, and will only accept audio and video clips respectively.

When dragging an AV clip from the project bin in timeline, the clip will be automatically split, the video part going on a video track, and the audio part on an audio track.

Configurable layout

Tracks can be resized
You can switch live between different layouts (audio tracks interleaved with video tracks, or together below the video tracks)

Keyboard Navigation

You now have the possibility to move clips and compositions with your keyboard. To do it, select a clip in timeline and use the "Grab Current Item" (Shift+G) function from the Timeline menu. You can then move the item with your arrow keys. Keyframes can also be moved individually. Just click on a keyframe in timeline, then move it left/right with arrows, change its value with + and -. Alt+arrow to go to another keyframe.

Keyframes

Started to improve handling of keyframes:

you can move a keyframe without altering it's value by using the vertical line that appears when you are above or below a keyframe.
Move several keyframes by shift-click on the line of a keyframe. All the following keyframes will move with the current one
Add a new keyframe by double clicking in timeline
Remove a keyframe by dragging it far above or below the clip limits

Improvements

configurable thumbnails for each track
Clip name always displayed when scrolling
Individual clips can now be disabled (still in timeline but with no audio and no video - works for all clip types)
Faster timeline preview - with support for hardware accelerated encoding
Improved feedback on move/resize
You can now copy / paste timeline clips between different projects (if you have 2 running instances of Kdenlive or after opening a different project) using the standard copy/paste

Project Bin

Improve management of proxy clips (can now be deleted for each clip)
Shortcut icon to drag only the audio or only the video of a clip in timeline
Improved management of audio/video streams, also allowing to enable/disable audio or video for a clip

Monitors

Support multiple guide overlays
Shortcut icon in clip monitor to drag only the audio or only the video of a clip in timeline
Support for external monitor display using Blackmagic Design decklink cards

Titler

Added configurable visual guides
Visualize missing elements, allowing to move or delete them
A combobox allows you to choose the default background, between checkered, black and white
Align buttons now cycle to allow you to align to safe margins and frame border instead of just frame border

Effects and Compositions

You can now define preferred effects and compositions. These will appear in the timeline context menus and in the effect/composition baskets for easier access
When dragging a composition from the list into timeline, it will automatically adjust its duration (to fit the entire clip or the duration of a clip overla depending on the context)

Resources

Since a long time, Kdenlive allowed users to download extra user contributes resources from store.kde.org. These download options have now been moved to more logical places instead of the "Settings" menu. Title templates can be downloaded from the Titler dialog, Render profiles from the Render dialog, Luma compositions from the Composition list and Shortcut layouts from the Shortcuts dialog.