In the past months I've received several communications from AdMob regarding GDPR. I've found them very difficult to understand, but from what I gather they say GDPR is entering a new phase. They also mention something called IAB (Internet Advertising Bureau?).
In none of those messages I've been able to figure out if any action is required from me. The latest novelty is this notification appeared in my AdMob account:
You can collect consent for GDPR with our new privacy message that supports IAB's latest consent framework starting from August 13, 2020. Visit our EU User Consent settings to learn about our consent message solution.
The fact that it starts with "You CAN" makes me think that this new GDPR form is not mandatory. However, the previous form, the one that we were instructed to use in 2018, appears now in Google's documentation as "Legacy" (can't find the link).
I'm confused about the situation regarding EU Compliance forms now. The fact that AdMob has sent several messages on the matter suggests that it is important. But up till now, that kind of communications usually ended with either a call to action "please comply with this before date X", or saying "no action from you is required". In this case, they never give you one of those options, and I don't understand what am I supposed to do.
...on the other hand, if this stuff is indeed important and some action is required, then I wonder why, unlike what happened in 2018, there are hardly any articles or tutorials online about this new GDPR setup, even though it seems more complex than the previous one (you're required to create an account in a service called Funding Choices, there seem to be new parameters like underAgeOfConsent...) All I've found is this SO question about the implementation of the new system, which doesn't give information about in which cases, or how, should that implementation be done.
As for Google, they have guides all over the place, but none of them makes clear either if this change is mandatory or not (and I don't know which one of the guides I should follow):
https://support.google.com/admob/answer/7666519
https://developers.google.com/admob/ump/android/quick-start
Could someone please clarify for me the situation regarding EU consent forms? What do I have to do to be on the safe side?
--Do I have to use this new system for future apps, or can I stick to the legacy system?
--If the old system is no longer allowed, am I supposed to replace the old form in all my previously published apps too?