32 vs 64 bit OS

[dcatteeu]

Hi,

I currently have a Raspberry Pi 3 model B to develop software that will run on the NetPi. The Raspberry Pi 3 model B has a 64 bit processor but runs a 32 bit OS. The NetPi has the same processor as the Raspberry Pi, but a different OS. 

1. Does the NetPi run a 32bit or 64bit Yocto Linux?

2. If it is a 64bit OS, I'd like to run a 64bit OS on the Raspberry Pi as well. What do you recommend?

Thanks,
david.