I started playing with Leaflets today and they've already won me over with their top-level Tour de France app (the rest is pretty nice as well). Their TdF app pulls from TdFBlog, VeloNews, and Paceline.

If you're looking for live TdF coverage instead of articles, another good option is Twitter + Hahlo. Hahlo reformats Twitter for easier use on the iPhone. Here are some Twitter people you can add:

• twitter.com/TdFblog
• twitter.com/TwitTour
• twitter.com/DailyTour (aka FredCast)
• twitter.com/tdf_updates
• twitter.com/kwc (me, updates generally start ~1 hour late due to TiVo catchup. more useful for link roundup updates)