Yes, batch processing is supported by the application. It doesn't matter if the files are in RAW, JPG, or TIFF format. The software will allow you to edit the files in batch mode.
Here is an excerpt from the official information:
If the selected images are RAW data, you can process and adjust images with Image Data Converter SR. It is also possible to process many images at once and save them in general format, JPEG or TIFF. (Batch processing)
Official website: http://support.d-imaging.sony.co.jp/www/disoft/int/ids/intro/