If some macusers have already adopted Lion, most users are still under Snow Leopard. Apple does not forget and offers updated since yesterday evening.
The latter aims to correct the malfunctions experienced by some users, especially when printing, the use of HDMI cables or optical audio output. The transfer of personal data of the user process has also been updated.
To complete the installation of this update, the easiest is to go through the same utility (accessible via the menu Apple then software update). Apple also offers a “Combo” version in downloads on its servers.