While mentionned in the change log, the textures in reality have not been changed.

No difference can be seen from last beta to this one.

https://github.com/Mojang/bedrock-samples/commit/563b7ad75fb90d686553d4e4221a4ffd132d074b#diff-9d9cf0fae2d6ef45d938a36bab35eb52d42bba6c0e05dc8a2604e48af360295a

https://github.com/Mojang/bedrock-samples/commit/563b7ad75fb90d686553d4e4221a4ffd132d074b#diff-5e2fe40f5ce639d13844e0f6a8c9c7bbe28ffbce262c175c052360c900f17178