After the conversation to Digital TV, will I still be able to listen to the audio carrier on my handheld?

I listen to the current analog TV audio with my handheld radio, but if I understand correctly Digital TV Signals include the audio carrier in the digital signal. That is why it can provide 5.1 surround.

The entire television signal will be using digital modulation. This includes the audio part. Your analog handheld won’t be able to demodulate it.