by Corel in 1996, WordPerfect for Windows has officially been known as Corel WordPerfect. On January 17, 2006, Corel announced WordPerfect X3. Corel is an original member of the OASIS Technical Committee on the OpenDocument Format, and Paul Langille, a senior Corel developer, is one of the original four authors of the OpenDocument specification. In January 2006, subscribers to Corel's electronic newsletter were informed that WordPerfect 13 was scheduled for release later in 2006. The subsequent release of X3 (identified as "13" internally and in registry entries) has been met with generally positive reviews, due to new features including a unique PDF import capability, metadata removal tools, integrated search and online resources and other features. Version X3 was described by CNET in January, 2006 as a "winner", "a feature-packed productivity suite that's just as easy to use — and in many ways more innovative than — industry-goliath Microsoft Office 2003." CNET went on to describe X3 as "a solid upgrade for long-time users", but that "Die-hard Microsoft fans may want to wait to see what Redmond has up its sleeve with the radical changes expected within the upcoming Microsoft Office 12." While the notable if incremental enhancements of WordPerfect Office X3 have been well received by reviewers, a number of online forums have voiced concern about the future direction of WordPerfect, with long-time users complaining about certain usability and functionality issues that users have been asking to have fixed for the last few release versions. Although the released version of X3 at the time did not support the OOXML or OpenDocument formats, a beta was released that supported both. Reports surfaced late in January 2006 that Apple's iWork had leapfrogged WordPerfect Office as the leading alternative to Microsoft Office. This claim was soon debunked after industry analyst Joe Wilcox described JupiterResearch usage surveys that showed WordPerfect as the No. 2 office suite behind Microsoft Office in the consumer, small and medium businesses, and enterprise markets with a roughly 15 percent share in each market. In April 2008, Corel released its WordPerfect Office X4 office suite containing the new X4 version of WordPerfect which includes support for PDF editing, OpenDocument and Office Open XML. However, X4 does not include support for editing PDF's containing images in JPEG2000 format, a format used by Adobe Acrobat 9. In March 2010, Corel released its WordPerfect Office X5 office suite, which contains the new X5