A few hours ago Microsoft silently updated the msn version. The newest version is now
7.0.0816 (as opposed to the former 7.0.0813)
You may download it at the messenger homepage.
A changelog is currently been worked on by developers and ill post it here when its done.
However asthetically nothing much has changed, and it seems this version simply fixes a few relaibilty issues / bugs.
Its probally not essential to update, although if you have the time to download it, do so.
EDIT: Most existing patches/ add-ons continue to work on this version