It has been a while since we started working on how to extended the Actor model with mechanisms to safely share state. Our workshop paper on Tanks was published in 2013. And now finally, an extended version of this work was accepted for publication. Below you can find the abstract with a few more details on the paper, and of course a preprint of the paper itself.
The actor model is a pretty nice abstraction to reason about completely independent entities that interact purely by exchanging messages. However, for software development, some see the pure actor model as too fine-grained and too restrictive exposing many of the low-level issues such as data races again on a higher level again, and thereby forgoing some of its conceptual benefits.