Why is the Community Shield being held in Wales?

[BBC]For the first since 2006, Wales' Principality Stadium will be the host for the Community Shield between Arsenal and Manchester City on Saturday, 16 August.Because of The Weeknd's 'After Hours til Dawn' tour taking place on the same day at Wembley Stadium, the annual Community Shield will take place away from London for the third time since it reopened in 2007.The Principality Stadium served as the venue for the Community Shield, FA Cup final and EFL Cup final between 2001-2007 while Wembley