What speculation do you have that will happen to ethereum, Ripple, Litecoin ?
There are many speculations out there or you can just use the search bar to look for those topics.
You can also look through those topics on google and it will show off.
I have not read anywhere of breaking news in May.
Me either but MadGamer said on what will happen on May and I guess that's the reason why OP is asking.
https://www.coindesk.com/events/consensus-2018/