The Chicago Manual of Style's new 16th edition is out, complete with updated style rules for book publishers and anyone else who follows this style. Some major style changes are here.
* web now takes a lowercase W, even though Internet and World Wide Web are still treated as proper names;
* you now capitalize the S in street when writing "at the intersection of Maple and Main Streets";
* iPod now gets a lowercase I when it begins a sentence; and, my favorite:
* "Names ending with an 'eez' sound - Names like Xerxes or Euripides now form the possessive in the usual way—with an apostrophe s. (When these forms are spoken, however, the additional s is generally not pronounced.)"
Again, that's for people who follow the Chicago Manual. All you AP Stylebook devotees can go back to puzzling over why Chicago continues to put so much focus on Xerxes and Euripides.