Maria Sharapova is making a scheduled announcement on Monday.
There are various rumours circulating including that of a retirement announcement.
Sharapova is 29 in April and has already retired from Fed Cup competition.
She has pulled out of several tournaments already this year with shoulder issues.
Her agent told Eurosport last month: "In order to play, she needs to be healthy, For this to happen, she will need to listen to the voice of her body, to the advice of doctors... But if her health is not good, it is unlikely that she will remain on the tour."

Maria Sharapova (76) by Dexter_Greycells, on Flickr
There are various rumours circulating including that of a retirement announcement.
Sharapova is 29 in April and has already retired from Fed Cup competition.
She has pulled out of several tournaments already this year with shoulder issues.
Her agent told Eurosport last month: "In order to play, she needs to be healthy, For this to happen, she will need to listen to the voice of her body, to the advice of doctors... But if her health is not good, it is unlikely that she will remain on the tour."

Maria Sharapova (76) by Dexter_Greycells, on Flickr