Amazon has opened pre-orders for the Dragon Ball Z: Season 4 and 5 Steelbook Blu-Rays. The fourth season includes episodes 108 to 139 of the anime television series. The fifth season includes episodes 140 to 165. If you are interested, you can pre-order with the following links from the online retailer:
You can also check out images of the packaging designs for the new steel book releases located just below this paragraph.
According to the product pages, the Dragon Ball Z: Season 4 and 5 Steelbook Blu-Rays are coming out on Dec. 15, 2020, in the U.S. region.