Firmware v2.40 has just been released. Go download it. Right now.
Additionally, it has been announced that both Burnout Paradise and Uncharted: Drake’s Fortune will "soon" receive trophy patches.
Now, for those of you that have been living under a rock for the last few weeks, this latest firmware update includes the highly-desired in-game XMB feature as well as a trophy system that seeks to rival Xbox 360 achievements. To clarify, in-game XMB includes in-game music.
What are you still doing here? Go download it!