Okay, so I found out some more info.
The CAZ2010 (old logo) is listed as a 2014 model and the CAZ2010/0 has the new logo (but there's no date available on the system)
The CAZ2012 (new logo) was 2016, but there was a CAZ2012/0 which also has the new logo - but again no date. So something else must have changed to warrant the new part number???
But some watches, like CAY1110 for example are still 'current' models but are shown as 2014 and are only available with the old logo. So either the dials were all made in 2014 before the logo change, or possibly the watches themselves were made in 2014.