I have never heard of it. There has been a trend in the nursery trade - a rather disturbing one - of making up new names for varieties that already have established names. Why? Two reasons that I know of: to avoid licensing of patented varieties (just plain against the law); and just to give an edge to someones marketing program. Both are BAD reasons. The buying public is always looking for something new, and there is financial incentive to bend or stretch or break the rules on the part of growers.
Now please, I am not saying this is the case with 'Cislano'. It appears to be a variety from Civano Nursery in Arizona. It may well be a worthwhile selection. Please keep us posted as to how it does for you.