For anyone having upgrade issues with screen and ncurses, some files have changed hands. These terminfo files used to be under the control of screen, but are now included as part of ncurses.
error: the following file conflicts were found: ncurses: /usr/share/terminfo/s/screen-256color: exists in filesystem ncurses: /usr/share/terminfo/s/screen-256color-bce: exists in filesystem
If you get this error, please upgrade screen first, then continue with the ncurses upgrade.