Hello there,
1. The dates Kal gave are more of a goal, hopefully can be accomplished, but it might not, that's why the date here in itch hasn't changed.
2. Negative, RS Eclipse will remain Patreon only during its full development, will only release on steam after all 3 acts are done.
3. The gap is a "break" period where only RS will be worked on and some other side things are finished, like the RS art update and such. As for input, its undecided but most likely will be 50/50 between community and wants of the team.