Al-Harith bin Bilal bin al-Harith narrates from his father; he (Bilal bin al-Harith (may Allah be pleased with him)) said: I said: O Messenger of Allah! Is changing the Hajj into Umrah specifically for us (the pilgrims of this year), or for people in general? He (peace and blessings be upon him) said: "Rather, it is specifically for us."
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1132