This release includes Dispensers and Sweeps (Protocol level, single message) support, a bitcoin version bump up to 0.18.1, and other improvements.
Upgrade Timing
Update should be done ASAP as the rules are already active. Bootstrap download or a full reparse is required as there’s already some dispensers active in mainnet and old nodes won’t pick them up (and diverge).
For those running a federated node:
cd federatednode/
fednode stop
git pull
sudo rm -f data/counterparty/counterparty.*
fednode update
fednode rebuild