Iam8bit just listed a 2LP set featuring tracks from the soundtracks to XCOM: Enemy Unknown on disc 1 and XCOM 2 on disc 2. The soundtrack to these titles were made by Michael McCann, Roland Rizzo, and Tim Wynn.
The 2LP set will come on 180g blue and white marbled vinyl and the cover comes with original art by Filip Hodas (see mockups below). Both digital soundtracks will be included in the set. Pre-orders have opened now and the set is planned for a Q2, 2016 release.