All your other sources? Do they work at Jeep? Are they reputable websites?
Milous is a Jeep insider.
http://www.jeepgarage.org/f89/2017-wrangler-jk-information-thread-95956-124.html#post1323470
Also read the other sticky here on this forum. Milous didn't write it but it also states all gas...
2017 is JK model, no diesel for USA, only export.
2018 JL model confirmed no diesel for USA, still only export.
2019 JL diesel for USA is questionable
.
Two comments:
1) The pickup is JP, not JT
2) 3.0L diesel for north america isn't scheduled till 2020 per your other thread.
http://jlwranglerforums.com/forum/threads/timeline-new-jeep-wrangler-to-include-gasoline-diesel-mild-hybrid-full-hybrid.13/