Mawlana Badrul Islam kindly shared with us the following:
Al-hamdu lillah, the 19-volume Ministry of Awqaf and Islamic Affairs (Qatar) edition of this monumental work of Imam Badr al-Din al-‘Ayni al-Hanafi is available to download here:
A review: http://www.dorar.net/art/478
There is also a similar edition (in 19 vols.) published by Dar al-Nawadir (Kuwait).
Recently Dar al-Minhaj (Jeddah) has published a new edition in 21 vols, which shows the name of the muhaqqiq as Shaykh Mawlana Sayyid Arshad Madani saheb of DU Deoband.