The latest release notes are:

•  RTCU IDE (Integrated Development Environment) V9.80 R2 New!

•  RTCU System-Firmware for NX32L based devices S1.07.00 New!

•  RTCU Runtime-Firmware for NX32L based devices R1.61.00 New!

•  RTCU Firmware for NX32/X32 based devices V5.10 New!

•  RTCU M2M Platform SDK V1.10

•  RTCU Communication Support Package (CSP) V4.20

•  RTCU Emulator V1.60

•  RTCU Communication Hub V1.02 New!

•  RTCU Deployment Server V5.30

•  RTCU Programming Tool V8.10

•  Navigation and Messaging Platform V3.00
   

All software releases, including the latest versions of the RTCU IDE and Firmware, can be downloaded free from the download section.
The entire RTCU IDE on-line help is available here.
 

Previous release notes can be found here