Who knows if he'll be in the series... by what I read he doesn't seem to be part of the core of the program more just involved.
There's also a mention of Sheridan.
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<font size="-2" color="silver">"The Babylon Project was our last, best, hope for peace.
A self-contained world five miles long, located in neutral
territory. A place of commerce and diplomacy for a quarter
of a million humans and aliens. A shining beacon in space,
all alone in the night. It was the dawn of the third age of
mankind, the year the great war came upon us all. This is
the story of the last of the Babylon stations. The year is
2259: the name of the place is Babylon 5."