Hampshire's Utilita Bowl in 2021 and Surrey's Kia Oval in 2023 have held the first two finals and England will once again be the venue for the one-off showpiece from June 11-15 next summer.
India, last year's runners-up, top the nine-team league with defending champions Australia second.
England are fifth but can boost their chances of a top-two finish with an unbeaten run in this winter's tours of Pakistan and New Zealand.