November 2016 - Zelda
August 2017 - Metroid
You would push a completed game back by 9 months? This is Nintendo. They released NSMB2 and NSMBU within 3 months of each other. Tropical Freeze and 3D World were planned to release a month apart. Metroid Prime and Wind Waker were only 5 months apart in NA.
What does Zelda have to do with Metroid, or with any other Nintendo game? If Zelda was planned to release this Holiday alongside Star Fox and Xenoblade, why couldn't it release next Holiday alongside Metroid?