I don’t think there were any plans for the cinematic starter kit to be sold separately. But things may be different now. I can predict I t won’t go on sale before the actual core book is published though.
Yes there will be a different adventure in the core book. I know this because we (well mostly my co-host Dave) have written it! It’s going to be shorter, the reason being that the adventure in the Cinematic starter kit is too long to fit in the core books page count.
Effekt - A fan podcast celebrating Swedish RPGs including, but not limited to: Alien; Coriolis; Forbidden Lands; Symbaroum; and Tales from the Loop. Featuring discussion magazine episodes and Actual Play recordings. https://effektpodcast.org/