How soon is now?
AppleInsider leaks a pending update to the recently launched Leopard.

Sources at AppleInsider have leaked news that Apple has already begun to circulate the testing of Mac OS X 10.5.1 Leopard. For those who frequent the Leopard support forums, you are already well aware of the many trials and tribulations of early Leopard adapters.  In fact, there are quite a number of major issues, such as data loss, which Leopard users are yelping about without any official confirmations from Apple.  Therefore, it is no surprise that internally Apple has begun the testing of a new version of Leopard which is designed to eliminate and rectify bugs and possibly security issues. Sometimes you just have to wonder what motivates a specific release of a product?  Is it true final completion, or the necessity to compete and drive profits and make investors happy?

Source: Appleinsider