for voice work it is supposed to be one of the original ghostbusters doing some custom voice work- the cheapest one
going off the art they are cashing in on the original movie - just look at the playfield art, cabinet and backglasses, not the reboot but sure Stern will enjoy the second boost of sales when the movie comes outs later in the year, I can imagine a few GB's sitting in Cinema's to help further sales, talk is they are trying to get approval for some of the original music but just based on the art snippets I tried doing a overlay on the white wood and inserts have moved around a bit so nothing is final until released.
if anything Stern are doing a new thing here as they are doing a 30 year old movie into a pin. JJP did WOZ and Dutch Pinball with The Big Lewbowski and Heighway with Aliens so they are joining the rest of them as sure back in the day we loved those movies and now we are in our 40's to 60's and more cashed up than a teenager so just makes sense.
as for release that is why I had the poll finish up on the last day of Feb as sources indicated that it would be between mid Feb to Mid March. Trudeau is also doing a presentation at the Texas Pinball Show which is around the 20th March which probably aligns with the 30 years of posters and Texas show was apparently the new show not to miss so dare say the release will be around then.