The October 2018 Visa Bulletin has been released. The EB-1 category has visas available for foreign nationals of all countries with priority dates of April 1, 2017 with the exception of China and India (priority dates: June 1, 2016). Most EB-2 category foreign nationals will have current priority dates and will be eligible for an immigrant visa (green card) except for EB-2 nationals of China (priority date: April 1, 2015) and India (priority date: March 26, 2009). EB-3 category foreign nationals have current priority dates with the exception again of China (priority date: June 1, 2015), India (priority date: January 1, 2009) and the addition of Philippines (priority date: June 1, 2017).
The F2A category (spouses and children under 21 of lawful permanent residents) cut-off date is August 22, 2016 except for Mexico which is August 1, 2016. Despite a movement forward, all other family-based categories have significant backlogs. The longest queues remain with the Philippines in both the F3 (married sons and daughters of U.S. citizens) and F4 (brothers and sisters of U.S. citizens) categories (priority date: June 8, 1995).
Cut-off dates on the Visa Bulletin do not always progress forward in time. A visa retrogression can occur when more people apply for a visa in a particular category or from a particular country than there are visa available for that month. Retrogression typically occurs toward the end of the fiscal year as visa issuance approaches the annual category or per-country limitations.
The October Visa Bulletin can be accessed via the U.S. Department of State website: https://travel.state.gov/content/travel/en/legal/visa-law0/visa-bulletin/2019/visa-bulletin-for-october-2018.html