Huawei may unveil its newest tablet at its next Chinese launch event. This show has been set for November 25, 2019, and may concern a device called a MatePad. Judging from this name, the slate appears to be a larger-screen analog of the Mate 30 or 30 Pro. Yu Chengdong, the OEM's director of consumer products, has reinforced this impression with his latest announcement on Weibo.
This social-media post (or its English-language translation, rather) indicates that it is indeed the Mate series that is to gain "new members". This intersects nicely with leaks concerning a MatePad Pro, a putative tablet powered by the high-end Kirin 990 SoC and possessed of a punch-hole display.
The "MatePad Pro" is also now said to have 2 model numbers: MRX-W09 and MRX-AL09, which suggests that it may have a LTE/4G (or 5G, perhaps?) variant. It is also thought to have at least 8GB of RAM and 256GB of internal storage. Finally, this potentially premium slate has been rumored to have black and white colorways, but may diversify into green and orange shades as well.