Here’s a quick PSA on the new retina display Macbooks. Got this from iFixit — the new MacBook Pro, apart from being the hardest portable to service will also be not upgradable in the future. If you’re planning to save money by getting a smaller SSD or RAM and wait a year to upgrade the internals, you can’t. That’s because these parts are soldered into the MacBook: the battery, the SSD (hard disk) and the RAM. Also, it appears that the display is so well integrated into the system and there’s no glass: if it breaks, you need to replace the entire MacBook.
Be sure to get some Apple Care once you acquire this amazing beauty. Just a precaution.