There’s 1.0.1 available now at GitHub. I’ll try to upgrade my 1.0.0 now. Don’t know how yet. 
p.s. I did it!
Here are the commands for upgrade from 1.0.0:
cd zcash
git fetch origin
git checkout v1.0.1
./zcutil/fetch-params.sh
./zcutil/build.sh -j$(nproc)
I wolud like to see in the terminal that I am running exactly 1.0.1 version though.