Version 5 Beta Documents?

Hi All,

My small company is looking at implementing Jahia in the next few months for
a small site and start rolling out new websites (we make many), in Jahia. To
that end, I was wondering if there is any prerelease documentation for
version 5. If not, maybe a list of changes (major or lesser) going into it?

I've reviewed some of the dev's blogs and found some useful stuff that way,
but I'm thinking I just missed finding the version 5 docs :)'


Any assistance is greatly appreciated!

Brian