As the expression goes, “a grand jury could indict a ham sandwich”.
The “milestone” question before was “will it go to GJ or not” - with many saying it wouldn’t. He’d pay them all off, the AG wouldn’t convene the GJ, etc.
Well that milestone is here & it absolutely didn’t go Watson’s way. And from what I understand, they typically convene a grand jury only if they feel they have enough evidence. 
And we know from past reports that many of the 10 women involved do not wish to settle. Of course that could change with an indictment, as the settlement offer could go up once Watson is in real jeopardy of a trial result.
time will tell, but there’s also a possible (and very likely) NFL suspension.
2023 is my bet, so long as Watson isn’t sentenced to prison (which I feel is possible, but very unlikely)