Studio Artist 5.01 is the latest Studio Artist release for mac and windows. You can update to 5.01 by logging on to your account at synthetik.com
IMPORTANT FOR MAC UPDATES:
In your downloads in your account you will see 3 files
Program only (64bit)
Program only (32bit)
You only need to download the two Program Only files and then replace the old files in your Studio Artist folder with the new updates.