> It's odd to me that I haven't heard anything about this approach since.

It has only been four months since they unveiled their first prototype. I don't understand your confusion. Chip development does not happen overnight...?

Their initial blog post laid out a roadmap, so theoretically they should have another thing to demonstrate this summer.

You are focusing on Taalas, but (specific) analogue computing, electronic NNs, compute-in-memory etc. - the field including the contextual approach - backdate to Rosenblatt.