Everything to prove, everything to lose Mar 28, 2017, 8:33am EDT Image: Evan Blass / Twitter You know what's coming tomorrow, you've known and waited for it for months now. Samsung's 2017 flagship smartphone, the Galaxy S8, will be officially announced, and one of the most critical periods in the company's history will begin. The phone Samsung launches on Wednesday will carry greater expectations and have to prove a lot more than usual. Even as the world's biggest smartphone maker, Samsung's mobile credibility was deeply shaken by the Galaxy Note 7 snafu, so it now needs to reassert its reliability while also rebooting its technological advantage. Here's a rundown of the biggest challenges facing Samsung as it prepares to take the wraps off the Galaxy S8 . The battery Of course . The bad jokes about "explosive Samsung news" haven't subsided even now, half a year after the Note 7 was recalled . The first thing every