PMP Technical Support has posted Software Release e2.1 for PMP320 and CNUT 3.20.15 on the PMP website.

http://motorola.wirelessbroadbandsupport.com/software/ 

Release Notes for e2.1 and the updated PMP320 Administration and Configuration guide are located at URL is listed above.

Highlights of Release e2.1 are:
 

CPE Isolation

Spectrum Analyzer Mode on the AP

(Extended Real-time Polling Service (ertPS) Service Flows

Ability to Set Management VLAN ID Equal to the Data VLAN PID

CPE Factory Reset Tool 

CPE NAT Support in L2 Mode

CPE Preferred AP List

Range Extension

Please read the Release Notes for more details.  Also see section 2.1 for Resolved Issues with the e2.1 release!
 
 
CNUT
 
CNUT 3.20.15 is recommended for upgrading modules to Release e2.1 and the release notes are attached.
Highlights of CNUT 3.20.15 are:

Support for system releases through 10.5 for OFDM and FSK radios

Support for system releases through e2.1 for PMP320

Supports Radius certificate uploading for PMP320 CPE