Digitimes claims that Apple is planning on launching a 17" Widescreen LCD" monitor "by year-end or the first quarter of 2007".
According to vendors cited by the article, 17" widescreen monitors will not necessarily be more expensive than the current 17" 4:3 models.
Apple previously had sold a 17" 4:3 ratio LCD until June 2004, when it revamped their monitor line to what it stands today:
20" Cinema (1680x1050) - $699
23" Cinema HD (1920x1200) - $999
30" Cinema HD (2560x1600) - $1999
A 17" Widescreen LCD would fall in the bottom end of the monitor line. While intriguing, the report comes from Digitimes whose rumor reports have been historically inaccurate.