If you are not in the loop already, we are currently waiting on a new ROG Phone 6D Ultimate scheduled to arrive on September 19. By all accounts it will be joined by a vanilla version, which, in typical Asus fashion, we expect to be identical to the Ultimate, sans memory options. This was recently confirmed once again by a social network post from a reputable industry source. The post seems to be referring to the vanilla ROG Phone 6D or perhaps both phones interchangeably. It reaffirms that the MediaTek Dimensity 9000+ chipset will power both phones - a fact already teased by Asus....
Source: https://www.gsmarena.com/asus_rog_phone_6d_specs_revealed_in_leak-news-55643.php