I made the jump after I saw the price adjustment in May! It still hurt since I bought my original S85 back when the dollar was par (oh, how I miss those days as a consumer....)! Regardless, the new car adds a number of features I didn't have, so I'm happily broke.
Based on recent dollar movements, I'd be surprised if there are further drops for a while. With this in mind, along with the new facelift and the referral credit, I made the jump and got my car a couple weeks ago.
I've also read on other parts of this forum that the Resale Value Guarantee was gone as of July 1st (or similar). On the Canadian site, at least (snapshot taken July 6, 2016, 9:44 pm PST) under the financing option, I still see the RVG. It might still be available for Canadians, but if it's being cancelled in the US site, we might lose it too. I financed through Scotiabank via Tesla and got my RVG confirmed.
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In celebration of Canada Day, we took a pic with my new red 90D!
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If another percentage point off helps, there's just over a week to use referral codes.
Here's mine:
Referral | Tesla Motors