Having launched an app earlier this year and having dealt with the same thing, I commiserate with Pebble here. Sometimes multiple days pass with no notice from Apple regarding anything positive or negative, then out of the blue, they decline the submission on random (sometimes ridiculous) grounds.
For instance - ours was stopped from approval at one point because we mentioned in the app description that it was available for iOS and Android, and Apple said nope due to the mention of Android. It had nothing to do with the functionality of the app itself, but in the description wording. It took a week for them to decline it for that.
Ours is coming along nicely, by the way - you can download it free here for whichever device you use:
http://www.divessi.com/app