service.js (generated json layer) is no longer automatically included. You have to declare that your portlet needs it,
service.js renamed to service_unpacked.js. Use service_packed.js for production.
everything.js renamed to everything_packed.js to keep with the same naming convention.
See the dtd for more information.
The same applies for css.
Also added the notation of "footer*" which is the same as header except it shows up in the bottom of the page for js that can be loaded later.
These optimizations save about 20k (gzipped from the download). So now everything_packed.js is 80 kb instead of 100 kb.