Isn't it interesting we still don't glimpse of Rathalos yet?
Instead we see many of Rathian, Egg hunt tutorial image... in Gravios hunting video... official rendering...
But Rathalos, the flagship of Monster Hunter series, so far only seen briefly at first ever trailer and then no sign of him.
I think it's pretty much related to the storyline. As we know, we fight Guardian Rathalos before regular Rathalos.
According to equipment progression table, it's how it presented. It means making Rathalos mysterious kinda explained. Because the first Rathalos we hunt is rather not real Rathalos.
I think Guardian Rathalos will show up in launch trailer, and it will surprise many.
'Oh hey we finally see Rathalos! Wait, why it looks different than what I already know about him?'
'Rathalos subspecies!?' 'Extinct Rathalos?!'
Based on how Capcom not giving any information about EM 162 in Iceshard Cliffs trailer other than its look, I think they will also not telling us what this Guardian Rathalos is. That's how I theorized on their marketing strategy.