Commenting on the Windows Live Hotmail support, Nokia said "Nokia Messaging now supports the three largest email providers in the world with both personal and hosted domain email accounts. Nokia Messaging connects to Windows Live Hotmail addresses over a special protocol that enables support for push delivery, subfolders and syncing of mail read status and flags."
On the wider development of the product: "As Nokia continues its transition into an internet services company, we are committed to building services that dynamically evolve. We’ve come a long way since the beta debuted in August and we’re looking forwarding to bringing support for S40 and Instant Messaging in the coming months. The best is yet to come."
See also the Messaging section on the Nokia Support forums to give Nokia direct feedback about version 1.1.