President Win Myint, who took office last month after his predecessor suddenly resigned, said the pardons would be granted on humanitarian grounds during the Buddhist new year festival known as Thingyan.
"The government can help them by cancelling the cases from the courts," he told AFP.
Myanmar has freed thousands from its jails since a military junta ceded power in 2011 after five decades of brutal repression.
Hundreds of political prisoners were released shortly after the civilian government of former democracy activist Aung San Suu Kyi took office in 2016 following a sweeping election victory. But hopes of a new era of free expression have been dampened by a surge in prosecutions under a online defamation law in recent years.
They were arrested in December while reporting on Myanmar security officers' role in the extrajudicial killings of 10 Rohingya men in Rakhine state, where troops are accused of waging an ethnic cleansing campaign against the Muslim minority.
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