None of the changes are of the "you must understand it now" variety:
most are related to the various Reviews. When the time comes for your
project's next Review, the talented Anne will step you through the
process and it will all seem rational and natural and you'll wonder why
we didn't do it this way before. Other of the changes are related to
project structure; for those, when the talented Karl approaches you
about refactoring your project, he will explain what needs to be done.
In either case, if you have any questions, please do not hesitate to ask.
Note that we are also working on improving the related process
documentation and moving it to the wiki. Please feel free to help (and
thanks already to Martin and Dave for their early contributions): http://wiki.eclipse.org/Development_Resources