You can download the beta here: http://www.hdrsoft.com/download/betas/pmp50.php. Here are a few notes from HDRsoft.
Photomatix Pro version 5.0 is currently in beta testing phase. You are welcome to help us test the beta releases, but please note the following:
- Beta releases are not stable versions of the software. They may not work properly and they may crash often.
- Beta releases are intended for testing purposes only, and should not be used for normal use and production work.
- Beta releases of Photomatix Pro include the usual registration system of normal versions, i.e. they run in trial mode when the software has not been registered.
- Beta releases are not supported. If you need support with running Photomatix Pro, please download the official release of Photomatix Pro instead