Hello, I played this game a year or two ago, but I haven't seen any updates regarding the robot voices. I was hoping this feature would be added someday, but surprisingly, there's been no news about it. Is this possible in future updates, or is it completely impossible?

Voice acting has been discussed in the community before, and it is something that has been considered.

However, there is currently no confirmed timeline for it.
Implementing voice acting would require professional voice actors and a large amount of work, so it is not a small feature to add.

At the moment, there has been no official announcement regarding when or if it will be implemented.