My friend told me it has been announce through a legit YouTube video by apple and it has like 3D calling and a holographic thing to projects a keyboard but I can't find any videos on it, has it been announced?
Has the iPhone 6 been announced?
No. Your friend was just pulling your leg
Your friend lied to you, Apple never announces any of their products through videos or social media. If they will release any product that big they would hold a conference and then that is where it would be announced by Apple. Just the way it has been for every single other iPhone. There is some rumors that the iPhone 5S will be coming out this year though.