The Intel Core i9-14900HX has shown up on Geekbench, scoring 2,998 and 17,937 in the single and multi-core tests. The laptop in question is from Acer, and it packs 32 GB of RAM and a GeForce RTX 4080. https://www.notebookcheck.net/Intel-Core-i9-14900HX-makes-Geekbench-debut-alongside-high-end-Acer-laptop.767313.0.html
Seems like much less improvement than stated in the article actually, not enough data.
There are 13900H machines on Geekbench with the same numbers.