Concurrent OO langauges

- A concurrent object calculus (here, and here)

- A Virtual Machine for a Process Calculus (here)
This paper presents a virtual machine for a strongly typed, polymorphic, concurrent, object-oriented programming language based on the TyCO process calculus

- AGENTS AND CONCURRENT OBJECTS (here)

And (less interesting but still "new"):
- Jeeg: A Programming Language for Concurrent Objects Synchronization (here)