The latest release notes are:

•  RTCU IDE (Integrated Development Environment) V9.86

•  RTCU System-Firmware for NX32L based devices S1.08.00 New! 

•  RTCU System-Firmware for the RTCU LX5 series S1.02.00 New! 

•  RTCU Runtime-Firmware for LX/NX32L based devices R1.91.50 New!

•   NX32L System Extensions

•  RTCU Firmware for NX32/X32 based devices V5.14

•  RTCU M2M Platform SDK V2.00

•  RTCU Communication Support Package (CSP) V4.30

•  RTCU Emulator V1.60

•  RTCU Communication Hub V1.04

•  RTCU Deployment Server V5.42

•  RTCU Programming Tool V8.20

•  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.