Yes.
It was only really known as Star Wars initially, but it's the title at the head of all the written stuff that disappears into space in the opening titles
No. The film was originally simply titled "Star Wars" and was only renamed for the 1980 re-release, to tie in with the name of the second film "Star Wars: The Empire Strikes Back".
Jabba is right. (I guess he should know). Further proof that Lucas only expanded his ideas to a trilogy/six films/nine films at a later date. BTW, it sounds as if he has now decided to go for the 9 films again!
yes it was known as a new hope from day one.the initial screenings had many more words scrolling up the screen than are now seen.it initially went through episodes 1 to 3 before introducing episode iv:a new hope
the movie was only known as star wars back then but now is also known as star wars:a new hope the same way that pitch black is now known as the chronicles of riddick:pitch black