A leaked Samsung Galaxy Tab A8 10.5 (2021) manual entry seemingly confirms that the renders we've seen of the device are legitimate.
The image from the manual confirms the layout of the controls as well as the placement of the ports and speakers - two speakers on the top and two on the bottom, flanking the USB-C port.
The Galaxy Tab A8 10.5 (2021) will have a 16:10 10.5-inch FullHD+ LCD, a Unisoc Tiger T618 SoC with 3GB or 4GB of RAM, 32/64/128GB of storage, and will run Android 11. There are a pair of cameras - 5MP on the front and 8MP on the back.
The Samsung Galaxy Tab A8 10.5 (2021) will come in three colors and start at €230 in Europe. The source says it will be available in mid-January 2022.