CALGARY, ALBERTA--(Marketwire - May 10, 2010) - WCSB Oil & Gas Royalty Income 2010-II Limited Partnership ("the Partnership") is pleased to announce that it has filed a preliminary prospectus dated May 7, 2010 relating to the initial public offering of units of the Partnership. The Offering is a $20,000,000 maximum offering and its initial closing is expected to take place by early June.