What is the name of lastest song Christ Brown sing?

My knowledge is limited to information available up until September 2021, so I may not have the most recent information on Chris Brown's music releases. However, as of September 2021, Chris Brown's latest single is "Iffy," which was released in May 2021.

Please note that this information may be outdated, and it's always best to check official sources or more up-to-date resources for the latest song releases by Chris Brown.