Duke Nukem 3D: 20th Anniversary World Tour will get a $20 physical edition release exclusively at GameStop.
The physical edition will release on October 18, a week later than the digital edition, which launches for PlayStation 4, Xbox One, and PC next Tuesday, October 11. The physical edition is only available on PlayStation 4 and Xbox One.

This is great news that this title will be getting a retail run, as that way even if the digital release gets pulled off storefronts (like what happened to the release of Duke Nukem 3D on PS Vita/PS3 recently), we can still get access to the retail versions.
Source: Gematsu