B32A (1591) Package Mechanical Drawing

Hi Altera users,

I checked a B32A (1591) Package Mechanical Drawing below.
Is there a newest version of this content?
There is a word of "preliminary", so I'm wondering if this is the latest version of the document.

https://www.intel.com/content/www/us/en/content-details/822563/b32a-1591-package-mechanical-drawing-a5e-043-052-065-devices-2-drawings-a5e-065-b32a-es0-prq-part-numbers.html

Thank you.
Best Regards,