I'm really curious to see a trip report on Israir - business (premium) class or otherwise.
In the meantime, assuming that the rumor about them leasing from Icelandair, and assuming (as I've see posted in airliners.net) that they are taking Icelandair's TF-FIA 763, then here is the seatmap:
http://www.loftleidir.com/mm?object=29