Okay, we've confirmed that 4.5 is the new software version.
It is the one now being distributed. If you'd like a copy of the new ResScan version 4.5, please follow the directions in this post:
Please note that the above link is a members-only area. You will need to register for a free Apnea Board forum account to access that link. Register for free HERE.
Apnea Board Administrator