I upgraded the controllers I have on the 8.3 train to 188.8.131.52 when that was the recommended version to avoid the catastrophic regression bugs. It's now been superseded by 184.108.40.206.
Is there any benefit to running the newer version other than it's a CCO release? Or best to just wait for MR5 as the next opportunity to update?
No difference apart from two catastrophic bug fixes.