Online shop Rakuten is now taking preorder for the Irregular Hunter X+Rockman Rockman Value Pack. Those who preorder will be treated to a special bonus item in the form of a soundtrack. Presumably, it will contain tracks from both IHX and RR.
It is unknown at this time if the soundtrack is exclusive to Rakuten. Once E-Capcom stocks the bundle, we might have a better idea of the situation.
Credit: The MegaMan Network