Update on the Factorio Soundtrack

[LeeJow]

Hi there, I would like to know if there are any plans for an update on the Factorio Soundtrack.
Currently the soundtrack list it outdated since it is missing 3 music pieces from the main game: Swell Pad, World Ambience 5 & World Ambience 6.

Space Age has a lot of new music, what will be much welcomed to be released in higher quality.

If there are plans for releasing the Space Age DLC in lossless quality, I would like to know if it will be added to the main game soundtrack or that it will be a separate soundtrack.

Thanks in advance for your reply.
- Lee