The best way to stay up to date with the latest development updates for Yearn is to monitor their Github activity. You can view the latest changes and commits in the Code-Changes-Log channel on Yearn's Discord server, or you can visit the Contribute page on Yearn's website to view the latest activity. Additionally, you can keep track of the latest Yearn Improvement Proposals (YIPs) on Snapshot.org. By staying up to date with the latest development updates, you can stay informed about the progress of Yearn and any potential changes or improvements that may be in the works.