Olympus iS-31 ?

Last year I bought a used iS-20 and so much enjoyed shooting it that i bought an iS-3 DLX. I have been reading what I can find about the iS system lately. Yesterday I came across an iS-31, which I had not heard of. In researching all I can find (which is extremely little) it seems this was an European model. At first I thought this might be related to the iS-30 but the design is much newer and the lens is different. It looks closer in design to the iS-50.

Anyway, I was just wondering if anyone has heard of this model or might know its production year(s), and if there is a US and/or Japanese version of it. The seller said it was in great working shape and I bought it for a good price....cheaper than my other 2 iS models.