Looking at Pedro's position and wondering if Suárez is going to occupy same space.
Basically, yes, though that's average position, not really accurate regarding attacking position. Pedro tracks back the most to defend of any of the forwards, which is why Neymar and Messi display in front of him. Suarez will be more level with Messi, or even further forward, as Messi plays more in the midfield. And Messi sometimes displays to the right of Pedro because of his attacks coming from the right touch line.
The front three positions, as I've observed them:
Messi playing center, with Pedro slightly to the right of him, and Neymar closer to the left touch line.
Movement:
Messi: sometimes walks up front, sometimes drops into center mid, sometimes goes wide right
Neymar: starts on the left touch, moving forward and center, as the play allows
Pedro: stays mostly center to draw a centerback off of Messi. Moves right when play advances down right through Xavi/Rakitic and Alves. Looks to make runs in behind high lines, otherwise, positions for wall passes and tap-ins. If ball is lost anywhere in his vicinity, he participates in the recovery as long as necessary
I expect Suarez to stay central like Pedro, but will take greater advantage of any slight gaps or weaknesses that present themselves. More likely to get #9 hold-up balls from Rakitic/Xavi/Iniesta to distribute to Messi, or turn himself.