This time because of the sensitive timing of European and Local elections.
They intend to publish the report the day after the elections, 23 May.
I would respectfully suggest the draft bill may contain some nasty surprises, which, if released earlier may cause an electoral backlash.
Meanwhile, today in The House
london taxis : 2 Public Bill committees=======================================
Public Bill Committee: Deregulation Bill: New Clause 9 - Private hire vehicles: circumstances in which driver's licence required (25 Mar 2014)