A new patch to Mantid that corrects some significant issues since the last full release including instrument definition updates for CNCS & TOPAZ and a critical bug fix to LoadISISNexus to correct a problem with assigning spectrum numbers to the correct detectors when loading a partial file has been release. The ISISLiveEventListener has also been improved to support a greater event rate. In addition there have been a few more minor bug fixes.
Details of what is available is the release are here
The new version is now available in the download area, you can also download the source code from the same page or access it on GitHub.