VXC 2100 series over VPN

So I found this in a Cisco article:
Note: The 99xx and 8961 phones can be upgraded to support VPN capabilities for VXC traffic. With this capability enabled, VXC voice and video traffic on the phone VPN are prioritized to ensure high quality.
http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/VXI/AG/VXI_AG.html#wp1060858
I looked for a firmware release, but the newest for the phone firmware is from October. Does anyone have an idea when this feature will actually be available? I am working on a project for remote users and this is a perfect solution.

mybranch#sh int fa01 switchport
Name: Fa1
Switchport: Enabled
Administrative Mode: dynamic access
Operational Mode: dynamic access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: Disabled
Access Mode VLAN: 10 (VLAN0010)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 10,50
Protected: false
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: 50
Appliance trust: none
mybranch#
mybranch#sh run int vlan 50
                     ^
% Invalid input detected at '^' marker.
mybranch#
mybranch#sh run int fa01
Building configuration...
Current configuration : 190 bytes
interface FastEthernet1
switchport access vlan 10
switchport voice vlan 50
no ip address
auto qos voip trust
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
end
mybranch#sh run int vlan 10
Building configuration...
Current configuration : 162 bytes
interface Vlan10
ip address 192.168.10.1 255.255.255.0
ip helper-address 192.168.200.200
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1452
end
Note: The ip address is 192.168.200.200 is the DHCP server at my main office. I posted some extras just in case.
Thanks.

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