A new version of the ReAssure testbed software, 1.20, is now available on the project web site. This version features a rewritten reservation manager that is multi-threaded, object-oriented, better commented, tested with PyLint, and responds to more queries from the web interface. The supporting serial switch communication library (soobml) was rewritten to be thread-safe, object-oriented and now supports multiple switches. Experiments are also started and stopped with much greater time precision. One small comment on PyLint: we allowed line lengths of 100. Lines of 80 characters are cramped when trying to provide meaningful error messages and referencing objects and invoking methods that have long, meaningful names. Our plans for the next release are to support user control of whether experimental PCs are allowed internet access. Currently only a specifically designated experimental PC is allowed access, for containment reasons. Thanks to Ed Cates (CERIAS staff) for providing system administration services and helping with ReAssure. This work is supported by the National Science Foundation under Grant No. 0420906. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.