I looked this up in both books, and in the newer edition, there is no mention of orange soda. In fact, the list is much shorter in the acceptable beverages department.

Clear broth/bouillion - read the label
Club soda
Cream - limit to 2-3 Tbsp. a day - note carb content
Decaff coffee or tea
Diet soda made with Splenda
Essence flavoured seltzer - must say no calories and must not contain aspartame
Herb tea - without barley or any fruit of sugar added
Lemon juice or lime juice - note that each containe 2.8 grams per ounce
Mineral water
Spring water
Water

Perhaps the list in the 2012 edition will be even shorter...

Karen