Black update now available in Philippines for L920 (unlocked RM-821_apac_philippines_388).
Already had the GDR3 preview installed.
Update went smoothly; although it took almost 2 hours to install and update (after downloading).
Nice touch that after the final restart it gives a popup notification "Welcome to Nokia Lumia Black", which links to a nokia.com webpage.
Nokia Beamer, Nokia Camera, and Nokia Storyteller Beta all installed afterward. Will play around with everything tonight and give any updates.