Too much stuff in the Italian press for there not to be something going on.
Of course, we don't actually know what Conte's thinking is behind a potential change of system.
The assumption is that Juve's recent poor defensive record or the injury to Lichtsteiner (and the lack of faith in Isla and Padoin) has prompted the change, but you can't discount the possibility that the plan was always to plan with a back four when playing a game like this.
This is really the first game Juve have faced that could give clues as to what Conte learned from the games against Bayern.
Maybe he decided a back three/five just isn't appropriate for games against very strong opponents who play with pacy wingers.
Of course, we don't actually know what Conte's thinking is behind a potential change of system.
The assumption is that Juve's recent poor defensive record or the injury to Lichtsteiner (and the lack of faith in Isla and Padoin) has prompted the change, but you can't discount the possibility that the plan was always to plan with a back four when playing a game like this.
This is really the first game Juve have faced that could give clues as to what Conte learned from the games against Bayern.
Maybe he decided a back three/five just isn't appropriate for games against very strong opponents who play with pacy wingers.

