It’s available now. I have it installed, but I’m not sure what it does yet. But I’ll update this when we have more info. Maybe Sony is preparing for Home stuff? Or it could just be something else.

[Update] Thanks Børten

If you’ve signed in to the PLAYSTATION Network tonight on your PS3, you probably noticed that you were prompted to upgrade the system’s firmware to v2.17. In case you were wondering what it’s all about (and a quick Google search indicates that yes, you are) the operating stability of some online PS3 titles has been improved.

Firmware Update (v2.17)