Here is one article about how the Stinger will be discontinued by the end of this quarter. Kia May Kill the Stinger and K5
Linking to other websites in your article is lazy writing. I literally found out they were all wrong by doing a little research of my own and calling a dealership.
Sure, if the website is questionable, like all those other articles from 3 years ago saying the Stinger was done. autonews.com is like the gold standard of automotive news (not car reviews) - jalopnik, autoblog, thethruthaboutcars, etc mostly get their news from autonews, and add in some of their own reviews from driving the cars, etc.
Now, autonews said "may", so its not 100% definite. But, autonews saying it, IMHO, gives it way more credibility than other sites.