Takara Tomy has announced Pokémon Sword and Shield related merchandise and Zacian and Zamazenta will be released on December 7, 2019 for 1,650 yen each. High resolution pictures have been added to an Imageboard thread.

Product Details:

Moncolle ML-18 Zacian
モンコレ ML-18 ザシアン
Release date: December 7, 2019
Part number: 4904810145912
Package size: W170 × H190 × D80mm
Price: 1,650 yen

Moncolle ML-19 Zamazenta
モンコレ ML-19 ザマゼンタ
Release date: December 7, 2019
Part number: 4904810145929
Package size: W170 × H190 × D80mm
Price: 1,650 yen

Sources: https://takaratomymall.jp/shop/g/g4904810145929/ and https://takaratomymall.jp/shop/g/g4904810145912/