If you were using the free tier of Places Nearby or Text Searches (aka radar) and staying just under the daily search limit, your previous yearly bill of $0 from Google will now be roughly:
1.7 million dollars
The pricing/limit changes are very aggressive. It's hard to believe they don't affect 98% of current users according to them.
I suspect that's 98% of users in the literal sense, with a very long tail of them having very little traffic. It's not the same as 98% of user traffic, i.e. API requests. :-)
Just a data point, but I got one about a minute ago - as I was reading this thread.
So, I suppose you still might get one - it seems clear that they didn't all go out on May 1st.
I got one
Did anyone actually get this mail? I am using a key and even got a receipt yesterday but did not get this mail about pricing changes (user from Germany).
Edit: Wow. I am currently using Places Radarsearch for a side project which currently has a (generous) free limit of 150.000 calls per day. If I read the pricing table correctly, I am now getting 5000 calls per month on the free tier (which also has to suffice for all other maps API calls). That's a 900-fold reduction..