Sarah Kuhn reported on this site that the new Philmont tents are made by MSR and much lighter than the old style A frame tents.
"The 'new' tents are a custom construction from MSR they look very similar to the MSR Carbon Reflex, but not exactly.
If your crews already has fairly light-weight tents that they are familiar with and room when traveling to Philmont is not an issue, then my 2 cents is bring your own. If you are looking at purchasing tents 'for Philmont' I wouldn't encourage it with the availability of the 'new' tents. The 'new' tents do muddy water a bit, I just don't have enough information to argue either way other than familiarity. I think most crews will be receiving the 'new' tents this year, but I'm sure there will still be some of the '16 stakes' in rotation. (Take a treat to the guys in supply!!!)"
There is a really nice photo in the original post.
If needed, you could always buy the tent stakes at the Philmont trading post.