BMW China announced few days ago, there will be limited versions of G29 Z4
The "Sun" limited version, limited to 100 cars, basically is a Frozen Orange sDrive25i M package
The 2nd limited version is the "Snow" version, also limited to 100 cars, basically is a Frozen Gray sDrive25i M package
Both of them will be more expensive that usual sDrive25i M package version (limited version must be more expensive!)