Hi Lily,
The Season #2 Pro Bundle currently only contains the packs that were available at the launch of Season #2, making it the same as Tier 1, but with the Pro version added. Once we create the Tier 2 bundle we will also make the Pro Bundle to include all other packs that have been released since the launch of Season #2, but this will probably only happen after the next 2 or 3 batch of packs have made available.