Although female Corrin may not be receiving an Amiibo (as far as we know anyway), that doesn’t mean that fans will be unable to own a plastic version of her.
Both of the figures are produced by Good Smile Company, who are renown for creating high-quality products. Which is also evident from the price tag: 6,800 Yen for the figma and 5,200 Yen for the nendoroid.
The figma is to scale and measures 145 mm, while the nendoroid is super-deformed and measures 100 mm. As you can see from the pictures, both can be posed and include a few accessories like a dragonstone.
Speaking of which, if you order the figma directly from GSC, you can get an exclusive Omega Yato accessory.