how do you know which version of the 321 for jetblue mint you are on?
 

I am flying from LAX to EWR but I can't figure out which plane i am on? Can I tell my the seating guide? is that accurate

It would be most likely the old Mint cabin on the A321ceo.
The A321LRneo's with the new Mint cabin haven't entered to service yet.

The new A321LD config is probably restricted to just JFK-LAX to start off.

There were reports that the new A321LD's were going to enter service in June.
Any updates?

Well, they've been doing in-house installs of the IFE at JFK during the pandemic downturn, but N2105J, the first A321N with the new mint cabin was sent to VQQ as normal, for IFE installation, so maybe they want it done sooner to be able to put this plane into service sooner?

now we have news on the first flight. first start flying on June 1, a little earlier than originally announced.

https://thepointsguy.com/news/book-j...-a321neo-mint/

It's really sad that B6 is announcing these kinds of news through TPG rather than their official channels.
By the way, the first flight is fully booked in Mint.

Seems like all dates with the new aircraft are now blocked from sale (you can tell it is the new product because the seat map shows 8 rows in a 1x1 configuration) but no matter what dates I try, all flights with the new Mint product appears unavailable

Indeed, I also tried some future dummy dates and Mint is not bookable at this time.

Maybe B6 only briefly opened up inventory so that Points Lie and One Gossip at a Time could book it ... lol

OTA Priceline is selling the inaugural and some other flights in the A321LD in Mint

https://cimg8.ibsrv.net/gimg/www.fly...db841c7c81.png

Seems to be bookable now — $199 upcharge for the Mint Studio on JFK-LAX

Seems like B6 reloaded the fares. I used my points and paid a $199 surcharge for Mint Studio :) a few days after the inaugural flight.

Just booked the Mint Studio for JFK-LAX on 6/5 for $647 + $199 which feels like a pretty good bargain

Even bigger bargain if you have enough B6 points and just pay the $199 Studio Surcharge :)