AppleInsider writes that sources have disclosed to the site that Mac OS X 10.5 Leopard is now “finalised” and that Apple has begun the process of training support staff.

The rumour sites notes that support material and training is said to be based around Leopard’s popular features such as Boot Camp and Mail.

It appears that Build 9A559 is the build that has been declared Gold Master. Build 9A559 was released on September 21st and later recieved a minor update on October 1st.

Leopard is widely expected to be released to the public on October 26th.

[Update] - Mac Rumors on the other hand claims that its sources have said that Build 9A599 is not Gold Master and internal builds are still progressing.