After the New Zealand Cricket (NZC), Cricket South Africa (CSA) has approved its players to participate in the Indian Premier League, scheduled in September-November in UAE. Overall, 10 Proteas players, including some big names AB de Villiers, Dale Styne, Faf du Plessis, are contracted with IPL franchises and might be seen in action in the 13th edition of the league.
The ongoing coronavirus has disturbed the whole cricketing schedule. The IPL 2020 was, originally, scheduled to start from 29th March but the outbreak of the infectious virus forced the postponement of the league.
BCCI finally decided to host the T20 league after ICC proclaimed the cancellation of the ICC T20 World cup 2020 which was scheduled in October-November.
South Africa players will definitely be given NOC: CSA

CSA media manager Koketso Gaofetoge confirmed that South Africa players will definitely be given No Objection Certificate (NOC) to feature in IPL. However, the final decision to play in the cash-rich league might lie in the hands of respective players.
“Cricket South Africa will definitely provide players with the NOCs for the Indian Premier League,” Gaofetoge said as quoted by Times Now.
Proteas players participating in IPL this year are: AB de Villiers (RCB), Chris Morris (RCB), Dale Steyn (RCB), Quinton de Kock (Mumbai Indians), Faf du Plessis (CSK), Imran Tahir (CSK), Lungi Ngidi (CSK), Kagiso Rabada (Delhi Capitals), Hardus Viljoen (Kings XI Punjab), and David Miller (Rajasthan Royals).
IPL 2020 final will be played on 18 November:

The league will be a 51 days program, starting from 19 September and the final will be played in Diwali Week i.e, November 8. All Indian cricketers who are bound with IPL contracts will be a feature in the league.
However, the final decision on the commencement of the league will depend on the Indian government’s approval, as per IPL chairman Brijesh Patel.