[1] Before S4C started broadcasting in November 1982, the BBC's main Welsh-language TV news programme was Heddiw (Today), which ran from 1961 to 1982.

[2] Heddiw ended in July 1982 and was replaced by short five-minute bulletins while preparations were made for the launch of Newyddion Saith, S4C's first regularly scheduled programme, which went on air at 7pm on 1 November 1982.

In 2020, S4C launched a digital version of the Newyddion service, employing its own journalists and producing original stories, that would be repackaged for the television bulletin.

[3] S4C weather forecasts are now broadcast in the news programme after BBC Cymru Wales moved into its new headquarters in Central Square, Cardiff.

Newyddion won the 2012 BAFTA Cymru Award for News Coverage for a special programme broadcast from New York to mark the tenth anniversary of the 11 September 2001 attacks.