I feel like there's a language barrier and I'm not understanding exactly what you're asking.
1. If you're asking what will be in the next update, it will complete Sunny's story and contain some progress with Leslie. Any overlap between them or their stories is not a guaranteed thing at all. The rest of the family is not guaranteed to get content or even appear in this update, as they get content in the x.5 versions.
2. There will not be any information given about new locations. Focus updates often do have some new maps, but what and where will not be revealed ahead of time.
3. There's 7 Sins, but also at least one other demon with Orgoluuk having been in Sabrina's update - any others that may or may not appear will also not be revealed. There hasn't been any indication that Leslie will or ever would turn into a demon, not really sure where that's coming from