Hi, This new backend supports the Panasonic KV-SS25 scanner. It should also support the following scanners with some customization: KV-SS50, KV-SS55, KV-SS50EX, KV-SS55EX, KV-SS850 and KV-SS855. It is probable that more Panasonic scanners can be supported. The backend is the alpha stage, but usable.
The patch (with .desc) is there: http://www.geocities.com/harikus2000/sane/ Frank.