Since the arrival of the XPS 15 9575 convertible with 32 GB of memory has been pushed all the way into the first part of 2019, it seems that those waiting for the successor to the current generation will have to wait some more. According to Frank Azor, the next-gen XPS 15 convertible will not arrive in the first half of the next year.
https://www.notebookcheck.net/The-Dell-XPS-15-9575-will-not-get-a-successor-in-the-first-half-of-2019.335906.0.html
"I can't but not anytime soon," so all we can tell for now is that the XPS 15 9575 could get a successor at the end of 2019's summer in the best-case scenario."
Hm, interesting logic - "not anytime soon" is ca a year! :)
The XPS 15 9575 should be due for a successor mid-2019, that's the idea. Based on Dell's current product life cycle, you are absolutely right - in this case, "not anytime soon" is about a year. ;)