You can use Epson Software Updater (which is installed the first time you install the printer driver) to notify you when new updates are available for download. Software Updater analyzes the Epson software (drivers, utilities, firmware, etc.) already installed on your computer and notifies you if new updates are available for download.
If you've already installed a Windows printer driver, you can update the driver by selecting Software Update on the Maintenance tab in the printer driver settings window.
If you're using a Mac, you can update the driver by selecting Software Update in the menu.