Apple is thought to be gearing up for releasing the seventh incremental update to Leopard later this week. Sources cited by Mac|Life are said to have gained knowledge of a Friday release, with the last known issues (in iChat and Safari) being fixed in build 9J58. As for the final build, it is said to arrive with fixes for networking, syncing and Bluetooth issues.
More at; http://news.softpedia.com/news/Mac-OS-X-10-5-7-Landing-on-Friday-Source-Says-110848.shtml