Regardless of whether Shino is walking away or to Hinata doesn't change the fact that he's on the cover. That's the part that struck me as odd. I understand having Hinata and Naruto on there, but what was the reason for adding Shino? That question made me wonder if he is going to play a bigger role in Hinata's life and so she can't die just yet.
Also, you could interpret that Shino is walking forward (toward the reader) while Naruto is walking away. Both of them are walking in opposite directions with Hinata in the middle. Almost as if Hinata is a a crossroads and she needs to make a decision that will either bring her forward (Shino) or backwards (Naruto). Granted, this can all be interpreted in many number of ways, but that's how I see the cover.
And if Shino does end up saving Hinata, I am so going out to buy myself a chocolate cake to eat in celebration. Heck, I might buy that cake anyways cause that sounds really yummy right now.