Hi @andrew.cra2019, there aren’t plans to bring JetPack 5 to Nano - for more info, please see Jetson Software Roadmap for 2H-2021 and 2022
Nano will continue to be supported with updates to JetPack 4 - the latest update was posted earlier this month: JetPack 4.6.3/L4T 32.7.3 released