I do not know if this is going to be permanent but it seems that you can get an additional pack now each time you open a regular mystery pack.
It may happened with the update. If it stays this means up to 120 more loyalty points per day, 100 more dinobucks plus 1000 more DNA possible and some dinos.
This would be a major increase of income that seems to be almost not recognized.
I advise everyone to check the mystery packs from now on each time after opening the regular pack.
Update: Obviously it happened only by chance that I had three additional packs in a row via ad. Now I’ve got another pack but no ad.
So the question remains: Is there a pattern? Back to square one.
Update #2: Opened three regular mystery packs today and got 2 additional ads. This makes 5 mystery packs in summary. Not too bad.