Slightly off-topic, but the Silver Sable and Black Cat movie seems to have found a director and been given an official title.
Now, my interest in the non-MCU Spider-movies was minimal, but the writer at Epicstream brought up this quote from producer Eric Carroll back in April...
"Going forward we would definitely treat [future Spider-Man movies] all as the same slate. So we would be as strategic about where future Spider-Man movies fall in the MCU of it all as we would if Sony weren’t involved, because there’s nothing in it for us or Sony to put a movie out at the wrong time or start confusing the continuity."
(Emphasis mine.)
At the time, before these spin-off movies seemed like a certainty, I assumed that this referred only to movies featuring Peter Parker. But applying it to Sony's larger plans, I can see them setting the movies in same continuity of
their own Spider-Man movie, and therefore making them all MCU by default.
There are so many characters that can be adapted to to the larger canon, and if the overall plan is to make them all MCU-compatable, I have to imagine that there will be some Marvel Studio creative influence involved in the process, perhaps even Kevin Feige himself, who is an Executive Producer on Homecoming, despite being the head of a "rival" studio.
I imagine that there would be nothing to stop them from mentioning Spider-Man or most of the events from Homecoming directly (and I'm sure that a mention of Tony Stark or somesuch wouldn't be a problem, all things considered), or even Spider-Man himself having some involvement. And even the MCU vaguely refers to the events of The Avengers as "The Incident". Same could apply here.
With that in mind (The probable Marvel creative influence more than the continuity), I'm willing to have more of a "wait and see" attitude towards this and other spin-offs.