An article in the Wall Street Journal, by Andy Pasztor, who seems to have the best info on airline accidents. Several new tidbits, including this:
The safety board's investigation, which hasn't yet established the probable cause of the accident, also is focusing on whether the design of the Boeing 737-500 model involved in the crash makes it particularly hard to control on the ground in such windy conditions.
Because of its relatively large tail surface compared to its length, pilots and safety experts believe such models may be more likely than other 737 versions to be blown around on the ground by crosswinds.
Toby Carroll, Continental's director of flight safety, told NTSB investigators that the airline was worried enough about the handling characteristics of 737-500s to consider restricting their use in Denver. The main airport there is notorious among aviators for stiff and gusty winds, especially during winter months.
Data Suggest Crew in Denver Crash Failed to Respond to Wind Gusts - WSJ.com
No mention of winglets though.