The OPM call letter also said that OPM plans to begin in July 2006 the enhanced dental and vision benefits ordered by a law passed last year. The benefits, designed to supplement the often limited offerings by FEHB carriers in those areas, will be a voluntary program for which the government will not pay a contribution. OPM expects to issue a contract solicitation by late summer, select dental and vision carriers by the end of the year, and conduct an open season in spring 2006. OPM said that issues related to coordination of benefits will arise and that it “will work toward developing model dental benefit provisions for FEHB carriers that wish to assure that their dental benefits integrate effectively with the new supplemental dental coverage.”