Will there be or is there some form of Dutch to English guide or resource to learn what all of the indicators say/mean for the ICM3 or for all of the menu screens/buttons say/mean on the SNG3?
You can always try google translate, and I'm sure you can ask for some translations here too, there are plenty of Dutch people here, myself included. I doubt a guide will be made for this.
You can always ask in the 'Spoorlijn Zwolle - Groningen' topic in the general discussion. I do my best to translate there