Having recently purchased a 2008 RX400h with the sat nav disc of 2007/2008, I decided to update. Following information on this forum I got a quote from my local Lexus Main Dealer, and then got a quote from Lexus mapupdates.eu and found that their price was the best.
When ordering from their web-site it was showing a delivery of up to 32 days, but when I received the order confirmation it showed a delivery date of 05/08/2015, which I calculated to be 44 days. I decided that this was just too long as I wouldn't have the update for most of my trips out during the summer, so I cancelled the order on the evening of the 22nd. The site said that I would have a confirmation within seven days and I was surprised to have an e-mail from them on Tuesday morning 23rd. asking if I still wanted to cancel my order as the goods were being picked that day and would be despatched that evening.
I agreed to accept the order as long as they kept to that schedule, and low and behold the discs arrived late this afternoon.
I have posted this as information for other forum members who might be considering an update.
Obviously I haven't tested the disc yet, but to me it shows that if you don't ask you don't get.
Cheers
Roger.