So, why is the Delhi high court tabling its decision on Imam Bukhari's successor. It's because there have been a slew of public interest litigations which in effect say that the mosque is the  property of the Delhi Wakf Board, which administers Muslim religious properties. This means that the Shahi Imam cannot unilaterally decide his successor. 

Bukhari was in the news last week when he invited Pakistani Prime Minister Nawaz Sharif to his son's anointment, but did not extend the same courtesy to Prime Minister Narendra Modi.