4_stable changelog

[Andrea Venturoli]

Hello.
Since a server of mine is behaving strangely lately, and since I've seen 
some patches going round lately, I'm considering upgrading from 4.11 
(latest patchlevel) to 4-STABLE.
I downloaded the source, but /usr/src/UPDATING says almost nothing.
Is there any available changelog or something similar?
Just to know what I'd go through...

  bye & Thanks
	av.