Ok, I installed this firmware upgrade, it will let you to keep the current setting (DVD+R/-R burning) or DVD+R/DL+R.... If you need -R you can revert back without any problems. They will release a 'full firmware' later but this should keep us happy for now.
I havent actually burned any DL with it, but DVDINFO does detect DL support after I have applied the firmware.
One thing that does suck is that the current Booktype Manager Software (bitsettings) does not let you set the DVD+R DL setting to DVD-ROM!!! I hope this is fixed soon - anyway I did email Benq asking them about this. Will let you guys know what they say when/if they reply.
Any other info is appreciated!