Last year, Google gave us the first two Pixel Smartphones i.e. Pixel with 5" Display and Pixel XL with 5.5" Display, with some extra Artificial intelligence in the form of the fledgling Google Assistant.
Both Google Pixel and Pixel XL were great devices but things like waterproofing were left out because of an "internal conflict between hardware (namely, camera) and/or waterproofing vs. price point".
Now Stephen Hall a senior editor for 9To5 Google has tweeted that waterproofing feature is "definitely coming with next Pixel Smartphones".
Little tidbit we were told in October last year that I forgot about: “Waterproofing definitely coming with next Pixel device.”— Stephen Hall (@hallstephenj) January 25, 2017
While this is still a rumor, So take with a pinch of salt.
Also Read: Google Pixel 2: What Features to Expect