While no official date has been announced for the reunion, HBO Max itself is expected to launch in May of 2020.
Although it’s been off the air since 2004, Friends remains wildly popular; HBO Max reportedly spent in excess of $400 million for the rights to stream reruns on the series.
If this is intended as one of its premiere early titles, it will have to be done by then.
No one would comment, but I hear each of the six stars will be paid in the $3 million-$4 million range for appearing in the special.