You can find the latest version via the following ways:
1. From the Web page
You can always find the latest version from the download page at http://www.foxitsoftware.com/downloads/.
2. Update Manager in the program
Open Foxit Reader, go to HELP>Check for Updates…If there is a newer version, it will be listed in the Updater. If you don't have Check for Updates option on your side, please check with your IT guy to see if this option has been disabled or not.
3. Subscribing Newsletters
You can subscribe for newsletters of the product you are interested in by referring to this KB article. The Newsletter will keep you informed of news and new software at Foxit.
Note: If you'd like to know which version is the most current version and if the new release is available, you may refer to the Version History page.