Reminder that the new form is called たそがれ (tasogare) in japanese, which mean "dusk", AND "dawn", also "twilight".

And are only 5 IDs for Lycanroc forms, only 3 of these are in the PGL
Lycanroc ID: 0 is the day form (which is in the PGL)
Lycanroc ID: 1 is the night form (it's in the PGL too)
Lycanroc ID: 2 is the new totem in day form from UltraSun (not in the PGL because totems don't get artworks)
Lycanroc ID: 3 is the new totem in night form from UltraMoon (no artwork as well)
Lycanroc ID: 4 is the new twilight from (which artwork's placeholder is still in the PGL)

There are 3 different Lycanroc, no more. Stop waiting for a "dawn" counterpart because the new one is already dawn and dusk at same time.