The system, or strategy, depends on each person, their ideas and their investment capacity. There is no magic wand, no miraculous software that tells you where you should invest, ensuring 1000% profits. That is something you should do yourself, you can listen to what others say, but I do not recommend that you do the same thing that others do. It is your money and therefore you decide where you want to invest it.
There are many web pages where they talk about upcoming releases, you just have to visit them for example, and read, read and keep reading. From there you can draw your own ideas and conclusions.