An ongoing diplomatic row with South Korea and China over some history textbooks could enter a new phase next month.

Government sources on Wednesday said Tokyo will unveil the results of its review of the two Asian neighbors' revision requests in the middle of July.

But they indicated the government will not make drastic, if any, modifications to the textbooks, which South Korea, China and domestic critics claim whitewash Japan's wartime atrocities and aggression against its Asian neighbors.