Hello AE Community 
Last week our dev team decided to announce a maintenance release containing some important improvements to the UPnP/NAT-PMP implementation.
We perceive this functionality as one of the major features of the æternity node since by simplifying the node setup process, we can significantly improve the connectivity of the æternity P2P network.
With this in mind, we strongly encourage node operators to update to version 1.4.0.
Best regards,
Albena