Last week HDRsoft released version 4.0 of what has pretty much become the "gold standard" for doing HDR and Exposure Fusion for real estate photography. This new version has the following major new features:
There are many other not so major new features and fixes. Look here for all the gory detail.
I've only used version 4.0 for a day or so but so far this feels like a great version. I love the built-in and user presets with thumbnails.
Trey Ratcliff has some interesting speed comparisons between doing HDR in Photoshop CS5. Photomatix 4.0 blows CS5 away in the area of speed!
To me most compelling feature Photomatix has for real estate photographers is having the same GUI interface, Lightroom interface and batch processing for both HDR and Exposure Fusion. All the other guys have either just HDR or just Exposure Fusion. It's nice to have both HDR and EF in the same software so you can go either way depending on the situation.