Just to be curious: 1.08b9 was released on the "official" D-Link GB site - what makes this less official than a release located on the "official" D-Link US site?? 
Following this logic we should all wait until there is an official release on the Taiwan server - this is their global headquarters...
Happy new year!
It depends on whom you contact for support - if you use firmware not available on the US site, then don't expect US support to assist you.
This can become a problem if you reside in one country and wish to use firmware not supported in that country - sure you can call or email the support group for the country whose firmware you are using, but expect to pay for the call, and expect to be denied support if or when they figure out that you are not a resident in their area.
Of course - these issues only matter if your unit is under warranty.