Run 8 has released Update #4 for V2 Today. Below are a list of changes

• Adjusted the threshold PSI/Second reduction-rate necessary to trigger the
  Emergency-Application Valve; this solves a minor issue reported about
  inconsistent emergency-application dump behaviour. (Since the customer who
  reported this is from Australia, I've added the extraneous “u” to the word
  “behaviour” in his honor)
• Corrected a crash-condition null reference that sometimes occurred during
  uncoupling
• Fixed two code mistakes with NORAC signals regarding non-dwarf MediumClear
  and LimitedClear aspects (for the Selkirk and Mohawk routes)
• Fixed a code mistake regarding the rear trucks of the SD40 Tunnel Motors
• Fixed another possible cause of the random loss of Simulation Settings when the
  program exits
• Fixed issue with humped-cars slamming too hard into bowl-tracks that are close to full

An update was also released for the Selkirk/Mohawk Region which addresses track, signal, and scenery issues. 

You can find both updates on the Run 8 Studios Website.