There's a "Euros by the Bay" meet happening on the 13th of January in Brisbane. It's looking to be a pretty big meet. I will be there, and hope to see other Z4M's there!
Here's the link to the event:
https://www.facebook.com/events/318814238707858/?ti=icl
There's a caravan from SVBimmer for those in the South Bay, as well as one coming from Sacramento.