The PlayStation 4 Pro has only been available in Sony's traditional Jet Black since it was revealed in September 2016. It's less powerful sibling, the standard PS4 has been available in both Jet Black and Glacier White, and now, the PS4 Pro appears to be getting the same treatment.
Smyths Toys, a retailer in the UK and Ireland, has listed a Glacier White 1 TB PS4 Pro and have dated it to release on November 7th, 2017. If this release date proves to be true, that means Sony is looking to release the new White PS4 Pro on the same day that Microsoft is releasing the Xbox One X.
The details on the store page do not list any changes for the console beyond the change in color.