Some good news for fans of Bethesda modding as xVASynth lets modders extend voice acting of existing actors.
More information.
xVASynth is a machine learning based speech synthesis app, using voices from characters/voice sets from Bethesda games.
GitHub: https://github.com/DanRuta/xVA-Synth/
Patreon: https://www.patreon.com/xvasynth
Discord: https://discord.gg/nv7c6E2TzV
Twitter: @dan_ruta