RWBY Volume 7 Amazon Listing: https://www.amazon.com/RWBY-Vol-Blu-ray-Burnie-Burns/dp/B08DSYSY18/ref=sr_1_2?dchild=1&keywords=RWBY+Volume+7&qid=1625522532&sr=8-2
There is no release date for Volume 8's Blu-ray, but should release later this year.