If this is true, Pokemon Sun and Moon may go down as one of the greatest games in the series. The news comes from Kaphotics, who revealed that the HM's are now listed as TM's in the move list....see the relevant part around :35 and continue reading below... 

It looks like instead moves like "Flash", "Fly", and "Surf" will occur naturally in Pokemon that have the ability to do any of those things. This means no more wasting valuable move slots on Pokemon in order to complete a section of the game! It also means you won't have that one garbage Pokemon in your party that's only there to light up a cave every so often. 

Now that it's finally being done, it makes me wonder why this hasn't been done sooner?! I guess it's been around so long I just accepted the shitty mechanic for what it was, but I'll be damned if it wasn't one of the worst features of Pokemon! I'm happy to see it go.