In an unusual move, Apple has begun seeding builds of 10.6.6 before the previous version, 10.6.5, has actually been released to the public, according to a report from AppleInsider. The new build contains no specific issues, but contains "developer support for and renewing App Store receipts." This refers to the upcoming Mac App Store that will be a future part of 10.6 (Snow Leopard) and next summer's 10.7 (Lion) release.
