The press conference was originally scheduled at 1730 hours on Thursday.
As originally scheduled, TCS will inform the exchanges about its July-September performance after the board meeting, the officials said.
A scheduled call with analysts at 7 pm will be held as per schedule, they said.
The last rites of Ratan Tata, who passed away late on Wednesday evening, are scheduled to take place after 4 pm at central Mumbai's Worli on Thursday.
Tata breathed his last on Wednesday evening at a city hospital.