it's a shelf. in itself it doesn't cause dilution, but it opens up possiblities (and to some extent a willingness) to future dilution.
there was an existing shelf for 2015 for the last two dilution rounds. apparently that shelf ran out, and they need a new one.
so no, this is not immediate dilution, but yes, this guarantees many many future financings.
but the shelf needs to be declared effective by the SEC, it will take time. this won't happen tomorrow.