Will be interesting to see what shape Conte goes for for this one.
As much as I prefer the 4-3-3, one has to consider that Juve struggled in Rome playing it, while they comfortably beat Roma in the Coppa playing 3-5-2.
I guess it depends on who you think will have the ball.
If Juve are confident they can dominate territory and possession with 4-3-3 then they should play it.
If they don't think 4-3-3 can dominate, they should play 3-5-2 because Juve are much better at sitting deep and soaking up pressure when playing that shape.
Whatever formation Juve play, they need to watch out for Marquinho. He runs beyond the forwards in a way no other Roma midfielder will (now that Perrotta is past it) and midfield runners are a big problem for any team that has Pirlo in it because they, more than anything else, expose his defensive weakness.
Might mean Juve should play Vidal relatively deep to watch for Marquinho's runs, with Marchisio given the freedom to play higher up the pitch.