The Onion Router version 0.1.1.20 (stable) has been released: "2006-05-23: Tor 0.1.1.20 features some major security fixes, including entry guards to protect the beginning of the circuit, exit enclaves to protect the end, and better firewall support; a new directory protocol that improves bandwidth use and keeps clients more up to date; two new directory authorities; a new ascii-based controller protocol that lets people easily write applications to interact with Tor; and many scalability and performance improvements." As it contains "major security fixes" it should make it into portage as fast as possible.
In ~x86 now.