Corel has shown it. The last WordPerfect version was 12, and now the new one is not 13, but rather X3. I think it's awkward to make it as full-Roman XIII, so it's shortened to X3. Perhaps, also not to be confused with X-Men 3 :-)
And BTW, the toolbar icons have been changed. After OpenOffice.org, now WordPerfect also has similar icon style to that of Office XP.
Although now WordPerfect can import PDF, just like KWord, from what I observe, this new X3 edition still unfortunately has no support for OpenDocument.