On 19th of April, NV Access released NVDA 2013.1RC1. This is a release candidate, which means that unless any critical issues are found, this will be almost identical to the final 2013.1 release.
Note that some translations may not yet be updated. They will be updated by the time of the final 2013.1 release.
Changes from Beta2 to RC1 are a Updated eSpeak speech synthesizer to 1.47.07, Fixed problems when interacting with Microsoft PowerPoint presentations in some cases, particularly in protected view. updated translation and documentation.
For more information, please go to http://community.nvda-project.org/blog/NVDA2013.1rc1Released