When W says that solipsism is not an opinion, the view is connected to the Tractatus saying it is present but cannot be said. There is something to be overcome but is not like overturning a proposition.

When W says that solipsism is not an opinion, the view is connected to the Tractatus saying it is present but cannot be said. There is something to be overcome but is not like overturning a proposition. — Paine

Yes, of course there must be a connection. That's very tricky. One might have expected W to announce that he had changed his mind, or not, and here's why. But, as usual, there's no explicit reference to the Tractatus. I suppose one question is whether W has overcome the solipsism of the TLP or is just expressing it in a different way. I think the orthodox view is that he has overcome it, in the sense that he does not even pick up the TLP discussion - not would it make much sense, I think, without the framework of logical atomism. To be honest, I don't know what I think. Thank you for that.
A possible preliminary question is whether W stands by solipsism “strictly carried out coincides with pure realism” (5.64). I can't see an analogy with that remark in what he says here. Nor does he even mention the limits of the world.