So there's a bit of a misinterpretation here. He's not saying they're revealing new content. It very well could be that they're revealing new content, but he is not explicitly saying so. He could just be referring to development anecdotes, etc. Here is a better translation:
"Hello, I'm [Motomu] Toriyama, the co-director of Final Fantasy VII Remake. We're finally going to hold the orchestra concert this weekend. Not only will there be songs from the original game, but many new songs were also written for Final Fantasy VII Remake, so I'm looking forward to the orchestra playing those. There'll be the performance of course, but there's also a bonus program in which I participate and talk a little bit about Final Fantasy VII Remake, which you'll only be able to hear [in the program]. So it would be much appreciated if you tune into that as well! It'll be held online, so lets keep the excitement going by sending each other comments! I hope we have a good time together!"