There is also the Rust programming language being developed by Graydon Hoare(the Mozilla Tracemonkey compiler dude), Brendan Eich (the Javascript creator) and Dave Herman (of PLT Scheme - Racket ?) http://lambda-the-ultimate.org/node/4009

From the language faq : http://wiki.github.com/graydon/rust/language-faq

   "Have you seen this Google language, Go? How does Rust  compare?

   Yes.

   Rust development was several years underway before Go    launched, no direct inspiration.
   Though Pike’s previous languages in the Go family   (Newsqueak, Alef, Limbo) were 
   influential, Go adopted semantics (safety and memory model) that are   quite unsatisfactory.
     Shared mutable state.
     Global GC.
     Null pointers.
     No RAII or destructors.
     No type-parametric user code.
   There are a number of other fine coroutine / actor languages in development presently. 
   It’s an area of focus across the PL community."