New York sought entry to the All-Ireland series but their request was denied.

[4][5] As a result of a decision taken at the Gaelic Athletic Association's (GAA) annual congress the previous year, as of 1970 all provincial finals, All-Ireland semi-finals and the All-Ireland final itself were extended to 80 minutes playing time.

The Leinster championship was extended to seven teams as Kildare entered the provincial series of games.

They had won the All-Ireland title at intermediate level in 1969 and decided to make the step up to the senior grade.

[7] First roundQuarter-finalsSemi-finalsFinalQuarter-finalsSemi-finalsFinalThe following players made their début in the 1970 championship: Tom Byrne Wexford August 15 Galway All-Ireland semi-final The Texaco Hurler of the Year was awarded to Pat McDonnell of Cork.