No specific info about version 4.1 beta. Please visit the main page of FastStone Image Viewer on Software Informer.
Instantly intuitive, packed with easy-to-use features. The learning curve is very short. Take your time with it - the more you use it the more you'll realise how much effort was put into it.
Guys this is a great tool, try it! I use it for many years and is still the better photo manager. Full of very usefull features with a nice photo-resizer.
Only 1 problem: the vector graphics formats are missing (.eps, .ai, etc.).