"Two new rewards - Pokemon Scarlet and Pokemon Violet partner pokemon mini-notebook and Pokemon Scarlet and Pokemon Violet violet highlighter with case are coming. Stay tuned for more info."
The notebook is adorned with iconography of the new generational starters, and the highlighter set is themed after the two legendaries (and the coloring of Scarlet and Violet itself). It's hard to say what point value these could clock in at when they hit the system, but count on at least 500 Platinum Points per item.
Also, it's very important to note that nearly all Pokemon items (even the crossover keychain with Splatoon 3) "sell out" of My Nintendo stock shortly after they launch. Make sure you have the points for the one(s) you want!