TB is right, revelation is a continuing process.
However, God alredy gave us what we need right now to achieve salvation and the kind of life He wants us to have.
Further revelation about how the universe works, what is in heaven, what the angels really look like...this may be revealed in the future, because right now we don't need it !
Imagine the mess we would do if we had a glimpse of how all these mysteries work...it would be like letting kids play with a nuclear reactor. First we need to get rid of sin so we can be prepared to deal with higher things...first things first !
This is exactly the purpose of Christianity wouldnt you agree? This was the message that Jesus had stressed the most.