According to IHS it was only ever named CMA CGM GEORG FORSTER.

Do you know whether the change from CMA CGM JAMES COOK was before or after launching?

Not aware that CMA CGM have re-allocated the name CMA CGM JAMES COOK to another newbuilding.
Perhaps going to Shanghai Jiangnan Changxing Heavy Industry Co Ltd - Yd H6001 or Yd H6003 to go with CMA CGM VASCO DE GAMA (Yd H6002 - IMO 9706889)

2015-07 PSC Inspected
2015-06 Name changed to CMA CGM GEORG FORSTER,
Flagged by United Kingdom,
PSC Inspected,
Status changed to In Service/Commission,
SMC Certificate issued by BV Expires 20151130,
Operator CMA CGM SA The French Line,
Technical Manager CMA Ships,
Owner Atlantic 1816 SNC,
Ship Manager CMA CGM SA The French Line,
Group Owner CMA CGM Holding & Co SAS
2015-05 Classed BV,
Contemplated BV
2015-03 Status changed to Launched
2014-12 Status changed to Keel Laid
2013-06 Status changed to On Order/Not Commenced

Dave - the information is the old Grosstonnage data which closed a few months ago and is no longer updated. The details will therefore contain inaccuracies.

Brgds
Phil

This is very confusing -- the number 9702144 is correct but the information is not !!! London is in the UK.