A new version of the iPad Publishing Companion Guide PDF is now available on the DPS Dashboard (https://digitalpublishing.acrobat.com). The link to download the Companion Guide is available in the "Additional Resources" section on the Dashboard. This version includes more detailed information about subscriptions and Newsstand and updates to reflect changes to the workflow.
Whenever you're getting ready to use Viewer Builder to create a new app or make a major revision to an existing app, it's a good idea to download the most recent version of the Companion Guide PDF. Keep in mind that this PDF is called a "Companion Guide" for a reason. When you're using the Apple iOS Provisioning Portal to create App IDs and certificates, watch the videos and use the Apple help links. When you're using iTunes Connect to manage your application and set up in-app purchases and subscriptions, use the iTunes Connect Developer Guide (https://itunesconnect.apple.com/docs/iTunesConnect_DeveloperGuide.pdf) along with the Companion Guide.
I didn't find any specific explanation on how to proceed when our certs expired
I think it is just re-newing the Push distri certs and P12 in the new app ID, but I wanted to be sure it's just that, and then re submit the app with those new certs to Apple
Can you please confirm or correct me if I ma wrong?
Also, what happen if we forgot and the certs expired for an online app ? sounds stupid but just to know
Expired certs aren't going to affect your app in the store. There is an option on the Apple dev site to renew certificates before they expire. You can either do that or renew the certificates when they expire. You'll need to download the .cer file from the Apple dev site and then do the back-and-forth process between the site and the desktop utility. The steps are the same.
You can continue to add UDIDs over a period of time. Just keep in mind that any mobileprovision file created before a UDID is added does not include that device, which means the dev app will not launch on that device.
For example, I just recently got an new iPad mini. When I loaded my app onto that device, it failed. I had to go back to the iOS developer site, specify the UDID, create a new dev mobileprovision file, and edit the app to include that new mobileprovision file. Then the dev app worked on the new iPad.