NEW YORK--(BUSINESS WIRE)--BlackRock Advisors, LLC today announced that BlackRock Municipal 2020 Term Trust (NYSE:BKK) provided a notice of the redemption of a portion of its issued and outstanding auction rate preferred shares (“ARPS”). The redemptions announced today, which total $5.0 million in ARPS, will be conducted at a liquidation preference of $25,000 per share, together with accrued and unpaid dividends thereon to the redemption date, if applicable. When taken together with previously