H.264 and MPEG-2 decoding, EyeConnect (Elgato's UPnP media server software, parts of which are included in EyeTV) and EyeTV sharing now all run in 64-bit mode for better performance.
Version 3.3.2 brings compatibility with the Netstream DTT networked dual tuner to the general release of EyeTV (and improves stability compared with the version shipped with that device). It also fixes various issues with the EyeTV Hybrid and EyeTV Sat.
More general improvements concern the EPG. For example, an issue affecting shows longer than three hours has been fixed, and program guide searches are no longer case sensitive.
Other fixes include improved quality of DV exports, improved performance when loading large libraries, and automatic detection of IP address changes.
So how do you get the new version? See page 2.
Alternatively, the complete EyeTV 3.3.2 can be downloaded here, but you will need a valid EyeTV 3.x licence key to use it.