The only person who can answer this is Jack. I believe he will be making an announcement in due course. Anything anyone else says until then is speculation.
BTW. Moving this thread to General / Off topic discussion as it's not a Suggestion and my OCD won't allow me to leave it in this subforum LOL.
I got 10 XP, I was surprised to find the daily reward, without any announcement before.
One remark about it, it's not that much visible.
I usually don't look at the "news" section, I expected something more like the in-app ads, next/below the "Quick Race" button and it disappears once you have it.
I like it! It's daily and if you don't log in your sol!!!!
As where the placement is, it's no different than when there's a special available to buy a pack of coins/cash. I can see it on my S8 just fine when I go to the home page.