Limit processing to landscape (width >= height) or portrait (height < width) files with PhotoResize400X.exe and PhotoResize400Y.exe. This allows you to process your image library in 2 steps applying different options to landspace and portrait pictures.
Rotate pictures by EXIF orientation tag while resizing them with PhotoResize400V.exe.
Higher accuracy resampling method improves quality in darker areas.
Support for JPEG arithmetic compression for both decoding and encoding. PhotoResize400A.exe creates JPEGs with arithmetic compression. Please note that very few applications support arithmetic compression at this moment, but probably will in the future, because the patents have recently expired. Arithmetic encoding reduces file size by ~10% while keeping the same quality.
