The LG G4 has appeared in the GFX Benchmark database, revealing the key specs. They are pretty close to what has been rumored so far, though the chipset is a surprise. The chipset reported features a hexa-core processor with Cortex-A57 cores plus an Adreno 418 GPU.
That's certainly not the Snapdragon 810 found in the LG G Flex2. Instead it's the the Snapdragon 808 announced in April last year alongside the 810. The phone will come with Android 5.1 Lollipop, 3GB of RAM and 32GB of storage (23GB user available).
The LG G4 will have a 5.5" QHD screen, same as the current model, but will upgrade the camera to 16MP with 2160p video. The selfie camera has been bumped up to 8MP with nearly 2160p video (the numbers reported by the benchmark don't seem to match a standard resolution).
Looking at the benchmark scores, the new GPU beats last year's Adreno 330 in the LG G3. Qualcomm said it should be 30% faster than the 330, but didn’t compare it to the 420. Again, going by the benchmark scores, the Adreno 418 seems to be in the middle between those two GPUs.