Since there doesn't seem to be a post-release thread....this is now on Amazon Prime, so gave it a view tonight.
Liked it very much, though I'm not sure I loved it. A deeply melancholy though not dark film. As someone who really fears old age and death, it was some hard viewing but McKellan was, unsurprisingly, very, very good in the title role. Linney's accent - I think she was meant to be Irish - is pretty weak but it wasn't self-parodying so I rolled with it.
It's a very understated film, almost to the point of being weightless...almost. A third act crisis teeters on the brink of melodrama but it's redeemed. McKellan brings a humanity to the role, especially when contrasting the confident and arrogant Holmes of 1918 with that of Holmes of 1947. The final shot of Holmes is a lovely bit showing us how Holmes has changed - moving away of embracing "pure" logic to openly acknowledging the value and power in honoring emotional experience.
The cameo of the actor playing Matinee Holmes was indeed a wonderful surprise.
Not a film if you're feeling hurried or need immediate payoffs. It's not long but it's paced like a film that quietly, confidently knows where it's going. We're getting spoiled by big blockbusters and shows meant to be binge watched, and it took me a good 30-40 minutes to really settle into the film's rhythms, which are very traditional cinema.