Looks like more anecdotal evidence Tesla is getting FSD and the subscription service ready for that end of June timeframe. I doubt they would go through hassle of that email unless they were very confident it's ready. I take these kinds things a lot more seriously than Elon's timeline tweets
The latest data from a Tesla car owner in Taiwan hints that the FSD Subscription is almost complete and will launch in early July. The launch of the service should open up many opportunities for Tesla car users and bring benefits to the company.
www.tesmanian.com