Apple Remote Desktop v3.5 includes two update packages:

• Apple Remote Desktop Client 3.5.1 updates the software that facilitates Remote Management (enabled in Sharing preferences, in System Preferences). It is available as an automatic Software Update and as manual download from Apple Support Downloads.
• Apple Remote Desktop Admin 3.5 updates the Remote Desktop application, which can be used to remotely administer Apple Remote Desktop clients. For users who installed Apple Remote Desktop from a physical disk, the update is available as an automatic Software Update and as manual download from Apple Support Downloads. For users who purchased Apple Remote Desktop from the Mac App Store, the update will appear in the Updates tab of the Mac App Store.