I've confirmed there is no new firmware yet available down here in Oz :S
I also got this email from symbian signed:
Thanks for gathering the information. You are correct, the Symbian Root Certificates are not present on the phone. Unfortunately there is nothing we can do here about this and I have informed Nokia of this issue. I expect that they will contact you but if they do not please email firstname.lastname@example.org to find out what you can do about this.