President Danilo Medina issued Decree 92-15 yesterday, Thursday 30 April 2015, establishing that Colombian leisure tourists can visit the Dominican Republic without visas. It also establishes that Dominicans who travel to Colombia for leisure will not need to obtain Colombian visas. On 19 March 2015, the foreign ministers of both countries signed an agreement in Washington, D.C. eliminating the visa requirement.
http://www.diariolibre.com/noticias/2015/04/30/i1124921_los-turistas-colombianos-podrn-viajar-repblica-dominicana-sin-visado.html