In 2015, OCLC announced that WorldCat Discovery Services would replace FirstSearch at the end of the calendar year. The Discovery interface, similar to Open WorldCat, features a revamped design, faceted results, and improved listings of related editions and formats. However, it lacks a few advanced search functions available via the FirstSearch version. In response to complaints about these missing options, the retirement date for FirstSearch was extended to 2016. This week it was announced that FirstSearch would continue into 2017, while work is done building a new platform to support full-featured searching. Since Worldcat Discovery will apparently also be enhanced with new capabilities, OCLC's prolonged development cycle and plans to maintain two product lines seem confounding.