Good news for the People of Poland and South Sudan, Bad for Bangladeshis.
The U.S. Department of State has announced a change to the rules of the DV-2013 lottery. The Green Card Lottery is now opened for Poland and South Sudanese immigrants and closed for Bangladeshi immigrants. The eligibility of countries is determined by the number of immigrants from that state in the previous years. Generally, if the number of immigrants from one country (people who were born in that country and not citizens of it) passes 50,000, the country will not be eligible to participate in the next lottery.
Starting with the good news, applicants from South Sudan and Poland are now eligible for the Green Card lottery (Poland was not eligible and South Sudan, after years of wars is a new country). To the disappointment of many Bangladeshi citizens, Bangladesh is now ineligible for the DV lottery.
The relevant information from travel.state.gov:
"....For DV-2013, natives of the following countries1 are not eligible to apply because the countries sent a total of more than 50,000 immigrants to the United States in the previous five years:
BANGLADESH, BRAZIL, CANADA, CHINA (mainland-born), COLOMBIA, DOMINICAN REPUBLIC, ECUADOR, EL SALVADOR, GUATEMALA, HAITI, INDIA, JAMAICA, MEXICO, PAKISTAN, PERU, PHILIPPINES, SOUTH KOREA, UNITED KINGDOM (except Northern Ireland) and its dependent territories, and VIETNAM."
and the good news for South Sudan and Poland:
"....For DV-2013, natives of South Sudan and Poland are now eligible for selection..."
Polish Green Card lottery application with USAGC
Green Card lottery application (English) with USAGC
U.S. Department of State (Source)