Unreal Engine 4.17 Released!

From the release notes:

*Added new experimental plugin that provides a camera aligned image plate, and associated sequencer track

This plugin is a stop-gap solution until fully fledged support is introduced with 'Media Framework 3.0'
Sequencer track can stream image sequences from disk onto UTexture properties that are exposed to cinematics*

Where can I find more info on this?
What is the experimental plugin name?

Thank you!