Stop What's New popup
The 'What's New' popup occurs with every new document opened even if Adobe Pro is already running. It is horribly annoying. If it is supposed to turn off once you review the pages, that is not working. Please add a mechanism to 'turn off notification'. I assume that Adobe is not posting new features to the product every 2 minutes.

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Matthew commented
Extremely annoying. Was told by an Adobe agent: "I did check with my team and I would like to let you know that unfortunately, we would be able to disable the pop up for when launching Acrobat and Take the tour. What's new is a feature update from the Engineering team to advertise the new features for the users". Quite frustrating when it's exactly the same news every time Acrobat is launched.