Big thread!
1. Android treats ram (IMO poor design decision) as a giant stack register, so fills it almost all up. If they put 4GB, you will end up with about the same free ram as 3GB. The only way this will not happen is if you do not have enough apps installed to fill the ram up.
2. I would say a 10% chance of a replaceable battery
3. About 50% chance of an sd card
4. The media latched on to a Sprint place holder and a rendered case photo for the sd slot- very iffy. Nice if true though
5. Samsung must operate in an opaque bubble if they think they can get rid of both features and not take a big sales hit with the Note.