@Brudertac I moved IMDb+ finally over to GitHub, the release date in question you can handle with: https://github.com/RoChess/IMDbPlus/blob/master/Scraper/IMDb+.Scraper.SVN.xml#L521-L528 (modify the RegExp obviously if you do not use imdb.com as a source)
Merlyn copied a lot from IMDb+ when he created FilmInfo+ for German users which is now critical with imdb.de being cancelled, so structure should be the same. The only exception is that I went one step further with IMDb+ plugin to control the settings, and offer auto-update on the scraper-script, and rename files.
Thank you! I will take a look into it. The IMDB.de Site is not used anymore in the Filminfo+.