Markus Schiavo posted a link in the N Scale Vehicle Association's Groups.io to Wiking's August 2026 release of a vintage set of N scale European vehicles. Here is the link to the set.
https://www.wiking.de/en/shop/catalog/product/view/id/20044/s/vier-klassische-personenwagen/ And, it looks like clear colorless window inserts really are back!

Here is a little background information for this set. This is a revival of the old N13 set that Wiking first released in 1971. And if my records are correct, these models have not been available from Wiking since 2005. The photo below shows the models from a 913 set (913-3-1) that was available from 1985-91. At that time, Wiking would offer multiple "versions" of the release, and each version would feature a different "official" Wiking color for each vehicle in the release. In this version, the Ford Capri was dark yellow-orange, the Porsche 911 was red, The Audi 100 was pale grey, and the VW 411 was sky blue. Also, I have added a little extra detailing to the models. The prototypes for all of these vehicles were imported and marketed in the U.S., with the Ford Capri being sold as a "Capri" by Lincoln-Mercury dealers.

From left to right: Ford Capri (sold in the U.S. from 1970 to 1974), Porsche 911 (sold in US from 1968 to 1972), Audi 100 (sold in the U.S. from 1970 to 1974), and the VW 411 (sold in the U.S. from 1969 to 1972).