Pavel announced "Hobbes for Pharo". Hobbes (Highly Objectified Blue Book Equivalent Smalltalk) is a virtual machine for the original Smalltalk-80 Version 2 by Xerox.
The Squeak/Pharo port is available now at SqueakSource:
Hobbes was first ported to Squeak by Dan Ingalls, later ported to VisualWorks by Vassili Bykov. There is an old version for Squeak available here.
You can see the VisualWorks version in action on a Simberon page.