Context

• Test upgrade v3 to v4 on v4.0.0-rc0 #4624
• Local v4 testnet with v4.0.0-rc0 #4622

Prerequisites

A celestia-node release that is compatible with v4.0.0

Proposal

• On a local network, test that celestia-app v4 is compatible with a celestia-node bridge node
• On a local network, test that the app version upgrade from v3 to v4 with a celestia-node bridge node