Probably an engineering sample
It seems that Qualcomm accidentally showed a reference smartphone based on the Snapdragon 8 Gen 4 SoC. Yes, more than six months before the expected release of this platform.
Qualcomm's video is generally dedicated to the Snapdragon X Elite, which is due out in the coming months, but some strange smartphone could be seen there. What's happening on the screen of a nearby monitor suggests that this is probably a smartphone based on Snapdragon 8 Gen 4.
At least there you can see a mention of a platform codenamed Pakala, and it, according to early leaks, corresponds to Qualcomm’s future flagship SoC.
That is, the company already has test chips, which means that leaks about parameters and performance may appear in the near future. Let us remind you that Snapdragon 8 Gen 4 is interesting because it should be the first single-chip system for smartphones with Oryon cores, like the Snapdragon X Elite for PC.