Not necessarily. It could just be really good at running small appsPersonally i think it will have 2GB RAM
Heres why i think so
"improving overall CPU performance by up to 70 per cent compared to the previous generation. And boosting graphics performance by up to a staggering 90 per cent compared to the previous generation"
If the 6s+ can improve CPU by 70% and Graphics by 90% surely this would need to be done by the help of extra RAM? Right?