Apple claims the new A9x faster than an intel core i5 mobile chip

Anyone knows what's the RAM size in the forthcoming ipad pro? It was rumored to carry 4GB DDR4 RAM (which would be really awesome), but since then the source of the rumor (e.g. an Adobe blog post) has been redacted for the part talking about the RAM size...

It's understandable that Apple always tries to conceal certain hardware configuration details for their products, possibly out of the worry that consumers might compare those configurations across devices built on different platforms...But I just wish I could at least mentally compare a certain Apple device to its predecessors, then I could know if some apps will freeze again when I switch tasks...