Firmware 1.04B08 is available on the D-Link support page. This is dated August 22, but no release notes come with it.
This is only a Beta and found the below info, but it doesn't say much.
Have you tried to install it?
DNS-320L/LW Firmware Release Notes
Firmware: 1.04 b08 (Beta)
Hardware: DNS-320L, DNS-320LW
Date: 2014/09/22
Note:
Some media reports have recently been published relating to vulnerabilities in network-attached storage and
network video recorder devices, including D-Link devices.
D-Link continues to provide updates for bugs and security patches to comply with the current vulnerabilities,
safe use, and product software quality standards.
D-Link is in process of verifying this beta firmware for full release which will include published releases notes.
We encourage to keep their D-Link Device updated.