In Settings, new option "Auto-Start/Stop Recording". This causes NetFone to automatically start recording when you connect to someone or when someone connects to you, and to stop recording when no-one is connected.
In Settings, new option "Record At 44.1KHz, Then Downsample". This causes NetFone to always record at 44.1KHz (best quality), and then reduce it to the rate selected in the main window. This may result in better quality than recording at the desired rate directly if you are using a cheap and nasty soundcard. Also, if your soundcard does not support the rate you want to use, enabling this option should allow you to use that rate (unless your soundcard is so nasty that it doesn't support 44.1KHz either).