Adobe’s official patch notes for this build listed over 30 bug fixes. The most notable included:

Create, edit, and animate text layers directly in the Program Monitor.

The update enhanced the Mercury Playback Engine, offering smoother real-time scrubbing and rendering when utilizing compatible NVIDIA or AMD graphics cards. Modern Compatibility Considerations

A significant number of crash-inducing bugs were resolved, including:

Some of the new features and enhancements in Adobe Premiere Pro CC 2017 11.1.2 include:

Update your GPU driver to a 2017-era driver (version 385.xx or similar). Newer drivers sometimes remove support for older CUDA architectures that 11.1.2 expects.

The most transformative change in the CC 2017 series was the introduction of the Essential Graphics Panel . This moved Premiere away from the old, separate Title Tool toward an integrated approach where text and shapes could be edited directly in the Program Monitor.