Reply received from [email protected] :

"Hi Johan,

SeatGuru receives a huge number of requests to add new airlines to the website. While KLM is on the short list, we do not know when it will be added to the SeatGuru site. We will certainly do our best to contact you when we have a better idea of timing. [. . .] We can tell you that Singapore Air and Lufthansa are currently in production and should be live on the site within two months."

johan