Have you heard anything about RavenCoin mooning within the next week or two.
There was a rumour that the team will have the event and they are going to present something that will make it grow 5-6 times in price?Or is it a fraud?

This is exactly how they are going to boost the price. Investors are looking for leads and many will fall for this "rumor" thus boosting the price.
Aha, so you mean if such a rumour is spreading and it works this way, then there is a good reason to buy some and once it goes up to sell and make some profit?
This is similar to any pump and dump, you gotta be very quick to make some quick buck and a whole lot of luck.