Corrected, thanks! I was watching the event live, and I could have swore Philip said it was IP68 - I evidently mixed that and the screen size up with the Xs. Apologies for the errors.There are multiple mistakes here:
At 6.1”, it has a bigger screen than the iPhone Xs (and by extension the iPhone X), not smaller as stated here.
It’s is IP67 rated, not IP68 as stated here.
Source: Apple website