There will be a starter set and a Player's Handbook, Dungeon Master's Guide, and Monster Manual. They won't all come out at once.
The starter set will be useful, but not for making characters.
You won't need the books to make characters.
There is something in between the starter set and the Player's Handbook, et al.
There may or may not be PDFs that may or may not be ready at launch.
This news is so enlightening that it reminds me of something.
Although, to be fair, there is one bit of exciting and interesting news, and that is that Kobold Press is actually the development studio for the introductory D&D adventures. That is exciting and I do trust Kobold Press.