Qualcomm Snapdragon 8 Plus Gen 2 specs are the same as the Snapdragon 8 Gen 2 for Galaxy. Samsung had earlier collaborated with Qualcomm for a special version of the Snapdragon 8 Gen 2 chipset(which they called SD 8 Gen 2 for Galaxy).
The Snapdragon 8 Plus Gen 2 or Snapdragon 8 Gen 2 for Galaxy is a faster version of the SD 8 Gen 2 chip. The Plus version increases the prime core from 3.2GHz to 3.36GHz and boosts the GPU clock speed from 680MHz to 719MHz. What this means is that the Snapdragon 8+ Gen 2 has a 5% higher CPU and 5.7% higher GPU performance.
The Snapdragon 8 Plus Gen 2 may be new to other brands or companies but to Samsung, it is not. Because it pioneered the use of it on the Galaxy S23 Series.
Aside from the Galaxy S23 Series, Red Magic 8S Pro now features the Snapdragon 8+ Gen 2 along with other tech companies.