"HERE IS AN OFFICIAL STATEMENT FROM NISSAN USA ON THIS ISSUE.
I spoke with my PR contact from Nissan USA today, and here is the official statement for NISSAN USA. Yes, there is an update, but it is for European 2018 LEAF owners within a certain manufacturing date ONLY.
Here is the response I received from Nissan this morning:
"Hi Gary – to follow up on our call, the vast majority of our US customers don’t use multiple fast charging procedures in any single day, so they are not affected by the charging safeguard feature on the new LEAF. Regarding the software update in Europe, Nissan is not currently planning to conduct the update in the US. For LEAF customers who expect to consistently use fast charging procedures more than twice per day for extended distance driving, we would suggest they contact their local Nissan dealership for advice on how to get the best out of their LEAF under these exceptional driving scenarios."
I further asked about how Nissan USA arrived at the decision not to offer this change to USA customers, and this was the response:
"the decision not to extend the European SW date to the US was based on actual charging session data that the 2018 LEAF fleet generates, and the repair requests that dealers receive from owners presenting this issue".
Essentially Nissan has data that shows that a very small number of the affected 2018 LEAF universe actually experience this situation, and they have no dealer service data with customers presenting the symptoms of this type of slowdown to be fixed on their cars."
IOW; Nissan has decided we early adopters do not deserve the right to choose.