Hello,
I will not comment on the accuracy of using VRF word in the blog you refer to, instead of less confusing wording like MPBGP/L3VPN. Bottomline for 10.1:
8320/8400 supports 32 VRFs, and does not support yet MPBGP/L3VPN.
When and which version will support MPBGP/L3VPN, please connect to the ATM speaker Scott Koster, who owns the software roadmap.
Thanks.