Sony Planning update to A-Series?

It seems a new Walkman has popped up on the FCC, the NW-A20, 3 models, A25, A26, A27.  These seem to mimic the current A-Series, A15, A16 and A17, so perhaps this is just a memory bump but it seems this is not the case.  The A25 is 16GB, A26 is 32GB and the A27 is 64GB.  External and internal images are due to be available on the FCC in early September, so perhaps an IFA debut again?  From the documents, not much is known, rear design seems identical to current device. 

Perhaps the update will bring noise cancellation to Europe but then not sure what else Sony would add for Japan.  If anyone has any more information please let me know using the contact information below, thanks.