We are in the process of releasing an update that you will need to download from your app store. The vast majority of the update is backend stuff related to data collection and protection that will not impact the game that cannot be implemented without a full-scale update. We apologize for the inconvenience.
The one visible change that has been made with this update is that you can now see the probability for individual heroes to appear in portals. To see the probabilities, tap the "Hero Drops" button for a portal and then tap the "Show Drop Chances" button. After that, just tap and hold the profile image for the hero whose drop rate you want to see!
It will appear like this:
We also have a button for other portal drop odds (things that aren't tokens). The current link goes to the forum instead of the proper web page, but that will be updated later this week. The button will eventually lead you to THIS PAGE
Also, Big Fish has made some updates to their account login system. The biggest difference is that if you are already logged into an account, you cannot immediately log into another account via Facebook or Google, you will have to log out of the first account to see the Facebook/Google login options.