This release fixes the mempool issues the network was experiencing since the fork.
Update is most important for service operators, pools, and wallet servers.
Other actors are encouraged to upgrade as well to ensure the best possible network health and quick transactions.
Unless a critical bug is discovered, this will be the final post fork release on 4.4. branch.
Here is a quick script to upgrade from a default 4.4.0.5+:
cd
rm master.zip
rm -rd Bismuth-master
wget https://github.com/bismuthfoundation/Bismuth/archive/master.zip
unzip master.zip
rm Bismuth-master/config.txt
cp -a ./Bismuth-master/. ./Bismuth/
Then restart the node, fi
cd Bismuth;python3.7 commands.py stop