In this release, FastCall adds a few great improvements. A hang up button can now be added to the widget so that you can end a call first, then add your Task picklist values, the call subject, and notes. You still have the option to end the call with Call Results, but if you prefer to end the call first, you can.
A related improvement is the option to end a call and not create the Task
You can now associate an Opportunity when calling a Salesforce Contact.