This may have been discussed elsewhere, but as of yesterday there was still some confusion on whether the SSD was soldered on or not.
TechCrunch confirms by teardown
http://techcrunch.com/2011/07/21/te...r-finds-almost-no-differences-from-old-model/
TechCrunch confirms by teardown
http://techcrunch.com/2011/07/21/te...r-finds-almost-no-differences-from-old-model/