Teardowns for the new Macbook Pros reveal that:
- RAM is soldered on, meaning it will be impossible to upgrade later if you need it
- battery is glued in and may break during dis-assembly, also covers the trackpad cable
- SSD drive is not standard 2.5'' drive but still may be upgradable later
- display assembly is completely fused... anything wrong with the display will have to replace the whole display assembly
source:
http://9to5mac.com/2013/10/25/new-ha...s/#more-294648