Conrad Murray Trial -- Jackson Family on Standby

The Jackson family is NOT inside the courtroom this morning ... as they have been for most of the Conrad Murray manslaughter trial ... but sources tell TMZ -- they WILL be when the verdict is read.

Sources close to the family tell TMZ ... the family is expected to get a 2-hour heads up when the jury is ready to present their verdict to the judge ... at which point, Katherine, Jermaine, La Toya and the rest of the crew will head on down to the courthouse.

The jury has already begun deliberating -- and they could return a verdict at any moment.