This is as much as it shows, Modbus related:
Modbus - Fixed writing multiple coils with function code 15
Modbus - Long, floats were not allowing bit addressing
Modbus - Subscribing to multiple elements was not working
There are a lot more changes to other components/controls, possibly DataSubscriber2.
All the improvements would always justify getting the latest version.
You might try adding another DataSubscriber2 and use it only to subscribe to those boolean values of interest to you.
Then, when you double-click the DataSubscriber2, you would use its DataChanged event to determine what boolean values have changed (this event is only fired when the values change).