True, though we're still far enough out from the series debut and that bit of information is vague enough that there are a few other possibilities:
1. EoW turns out not to be in the MCU after all, as was the case for Spider-Man: Freshman Year.
2. This Iron Fist is pre-Danny Rand, since the concept seems to be that it will feature warriors throughout history.
3. Maybe Colleen and/or Danny will appear in animated from to pass the torch to the new character. (Not likely, but it'd be easier to arrange in animation.)