Included in the license cost is a one-year maintenance agreement that covers the following:
- Free minor and major upgrades (for example upgrade from v5.x to v6.x).
- Free technical support by e-mail.
- Highest priority for bug fixes.
- Highest priority for requests for new features.
This maintenance agreement can be optionally renewed annually.
Please note that maintenance is optional, and you're free to choose not to continue the maintenance program.
You can read more about maintenance here
This software is regularly updated and you can always find the latest available release here