Last week these updates also leaked onto the world wide web but now they are official - Microsoft just added them to their downloads area.

It is "Update for Windows Vista (KB938979)" and the description is as follows:

This update resolves the following issues on a Windows Vista-based computer:

- You experience a long delay when you try to exit the Photos screen saver.

- A memory leak occurs when you use the Windows Energy screen saver.

- If User Account Control is disabled on the computer, you cannot install a network printer successfully. This problem occurs if the network printer is hosted by a Windows XP-based or a Windows Server 2003-based computer.

- When you write data to an AVI file by using the AVIStreamWrite function, the file header of the AVI file is corrupted.

- When you copy or move a large file, the "estimated time remaining" takes a long time to be calculated and displayed.

- After you resume the computer from hibernation, it takes a long time to display the logon screen.

- When you synchronize an offline file to a server, the offline file is corrupted.

- If you edit an image file that uses the RAW image format, data loss occurs in the image file.

- After you resume the computer from hibernation, the computer loses its default gateway address.

- Poor memory management performance occurs.

There are 32-bit and 64-bit versions available for download right now and they come in at around 10MB.

As a quick note, I installed the update on my Vista 32-bit box and noticed rapid improvements when it comes to file copying and calculating time remaining - wicked and probably about time William!