UPDATE - 4/5@10:16AM: Here's the listing (only $3,999!) for the guitar on Gibson's site (thanks DrMike).
Gibson debuted their new limited edition, Alex Lifeson Signature ES Les Paul Custom guitar at the NAMM 2017 trade show in Anaheim, CA back in January, and earlier today they posted a 1-minute video of Alex talking about and playing the guitar. You can watch the video below or at this location (thanks Dean S). You can also check out this video of Mike from Gibson Memphis giving Harmony Central a detailed video breakdown of the guitar and its construction.