So when I first bought the MX67 model, the max bandwidth (and still stated on the MX Family Datasheet), is 450Mbps.
 
I'm creating a new site today with an MX67 and I just noticed the max bandwitdth for the WAN interfaces can now go up to 600Mbps.
I checked all my previously built sites, and they show this:
 

 
When I click on the 'simple' button, it gives me the option to increase it to 600Mbps.
 

 
The only other MX I have is the MX84, which can still only go up to 500Mbps.
 
All my MX units for all sites are running firmware version 15.44, and I don't see any notes about it being increased.
 
Anyone else seeing this?