Apparently the Switzerland selection will be opened by SRF, co-operating with RTS, RSI, and RTR.
The songs will be submitted through the window of 2-16 September 2019, a pretty short time, actually.
The 100-member audience and 20-member international jury panel will also be back.
Some interesting rules:
Rule 10: One of the purposes of the "Eurovision Song Contest“ is to arouse the feelings of the viewers
and jury members by addressing certain topics. We therefore encourage composers and
lyricists to submit songs that address topical issues or which trigger an emotional reaction or
recognition among ESC viewers with their content.
Rule 16: Songs may be submitted even if the final performer is not yet known. In this case a demo
voice is required
Rule 19: . For quality purposes, SRG SSR may at any time call for a revision of the production or lyrics of
the winning song, and it has the sole right of decision in this respect.
Rule 22: . In the case of a tie, perfomers who are Swiss nationals or are resident in Switzerland will be
chosen. However, nationality is not a deciding factor and does not prohibit anybody from
singing in a song