AllDoCube has posted a demo of their X prototype model, this is the 6-core MediaTek MTK8176 SoC with a 10.5″ 2560 x 1600 Samsung Super AMOLED. This is the same panel used in the Samsung Tab S4. It also has a decent HiFi DAC for audio, 4GB of RAM and 64GB of storage with MicroSD support. It has fingerprint security unlocking and runs Android 8.1.
This video is listed as the normal speed one, but to me, it still looks a little sped up. The AllDoCube X is due to be shipping soon and still up for sale for $239 via the Indiegogo campaign. $352,479 USD total funds have been raised.