For the record, I hope that Chrysler releases the 3.0 so I'm not trying to fight you on this... Of course anything is possible at this point and manufacturers have been known in the past to change on a dime for no apparent reason. I can't speak for you or anyone else for that matter, but as far as third party's are concerned, allpar has been a known and reputable source for Chrysler for over 20 years, I trust what they have to say vs "auto blog" and "jalopnik" no offense. Besides, if you actually read what you posted vs what I posted, the allpar article is very specific whereas yours are rather vague.
As far as researching more than one quote... Did I fail to mention that i work for Chrysler and have for a number of years? I work at a local dealership in a management capacity and I speak to our rep frequently(on a weekly basis). In doing so, I am privy to information that most don't have. The one thing I can tell you for sure is that the eight speed transmission is happening. Chrysler has used it with success on other vehicles and it helps contribute both better MPG and performance. It could happen as early as 2017. The diesel option is most likely going to happen but it hinges on two things. Sorting out emissions and gauging the sales numbers of the current light duty diesels to see if there will be enough demand even though the jeep community has been begging for it. 2018 is a possibility but it could be 2019 or later or not at all.
I do hope they make the diesel platform in the wrangler, I am a huge proponent but at this point it's still speculation so arguing over what might be is kind of silly don't you think? I do hope its the 3.0 because they drive nice and perform well but one thing to think about is that they already make wrangler diesels with the 2.8. From a cost standpoint it just makes more sense.