It will come into effect after the ODI Super League ends next year.
In January this year, the ICC had introduced a rule for T20Is, for both men and women, where, if the fielding team is unable to start the final over of the innings within the stipulated time, they would be penalised by bringing an additional fielder in the 30-yard circle. Which means they would be able to place a maximum of four fielders at the boundary. This rule will now come into effect into ODIs as well, starting next year.
The ICC, in its new playing conditions, has banned the use of saliva to polish the ball altogether, after initially putting it in place as a temporary measure during the Covid-19 pandemic. That aside:
The playing conditions for men’s and women’s ODIs and T20Is would also be amended to allow hybrid pitches to be used, if it’s agreed to by both teams. Currently, hybrid pitches can be used only in women’s T20Is, as seen in the Commonwealth Games in Birmingham.