Just after five days of release of OS X Snow Leopard Build 10A402, Apple rolled out Build 10A411 to registered developers. OS X Snow Leopard Build 10A411 is lighter in weight just about 750 MB. This is the recommended by Apple for the users who are running OS X Snow Leopard Build 10A402 or later to switch over OS X Snow Leopard Build 10A411 for stability, compatibility and security purpose.

According to Apple’s Up to Date program, the current users of OS X Leopard could get upgrade for the new OS in $29, and if you’ve purchased a qualifying computer or Xserve on or after June 8, 2009 that does not include Mac OS X Snow Leopard, you can upgrade to Mac OS X Snow Leopard for $9.95.