$850,000,000, to remain available until September 30, 2021: Provided , That notwithstanding the amount made available under this heading, the threshold reduction requirements in sections 216(10) and 217(b)(4) of such Act shall not apply to allocations of such amount: Provided further , That the requirements under provisos 2 through 6 under this heading for fiscal year 2012 and such requirements applicable pursuant to the Full-Year Continuing Appropriations Act, 2013 , shall not apply to any project to which funds were committed on or after August 23, 2013, but such projects shall instead be governed by the Final Rule titled Home Investment Partnerships Program