This was one of the first things i noticed when I started to explore the new dev mode.
Actually, the typography is available in the Layers pannel now, for each text layer.
But i don’t think that’s the best place, since it’s completely isoleted there and one could only see the text style aplied to the selected layers, not all of them at once.
The same goes for the color styles that aren’t all listed as before, you’ll only be able to see the ones in the selected layers, out of the order defined in the Design pannel. The difference is that at least the colors are placed next to the rest of the main information.