Well the one new chip that is ACTUALLY new, the HT-PCIE tunnel M1695, is a highly welcome addition to the HyperTransport puzzle. We have AGP, PCI-X and PCIE tunnel chips now, as well as a selection of south bridges - all of which are freely mixable. If you want to design a board using an ULi PCIE tunnel, an AMD PCI-X tunnel and an NVidia single-chip "southbridge", you can do that - and it'll even work. That's because those "tunnel" chips not only fork to their specific type of bus, but also tunnel the HT through so you can daisy-chain further HT stuff to them.
The other chip "introduced" today, the M1567, is just the existing M1689 AGP single-chip solution with a new number on to make it look like a south bridge - if you ask me. The feature set is strikingly identical.