I know when I ordered mine, if I remember correctly, was told 10 weeks and at the 6 week mark I got notified that it was shipping. So, I believe mine actually arrived in 7-8 week mark.
I have been extremely pleased with model even though I had to wait. The downside for me wasn't the waiting for the grapple, but my 3rd function kit from the dealer. I waited for two months, kit showed up, wrong kit. I had to wait all over again and then it finally showed up. My early pictures of the grapple on my tractor was just that the grapple on the tractor, no third function valve to allow it to operate.
Yes, I had to pay for the valve when I ordered it from the dealer and wait the time for it to arrive.