Henin, 27, would make the announcement on evening news shows in Belgium, a number of newspapers reported.
Henin, who retired in May 2008 at the age of 25, has been scheduled to play exhibition tournaments in Dubai and Belgium in November and December.
The seven-time Grand Slam winner has witnessed the return of compatriot Kim Clijsters, who won the US Open a week ago after just a month back on the professional circuit.
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