New TRF201 rear suspension mounts announced at Nuremberg 2011

[Nige]

Within the products Tamiya launched at the Nuremberg show there are new TRF201 rear suspension mounts.

http://www.tamiya.com/english/nurnberg/index.htm

TRF201 Aluminum Rear Suspension Mount (XA)
TRF201 Aluminum Rear Suspension Mount (XB)

How do these differ to:

http://cgi.ebay.co.uk/54242-TAMIYA-T...item53e40b04c3

and

http://cgi.ebay.co.uk/54243-TAMIYA-T...item53e40b04b7

I assume they will provide different toe-in, but just wondered if anybody had any further details on them?