Microsoft may be offering a unified package for Xbox users subscribing to both Xbox Live Gold and Xbox Game Pass.
Initially unveiled by Twitter user (and known Xbox leaker) h0x0d and first reported by The Verge. The package is reported to cost $14.99 USD per month and assumedly contains all the services included in both subscriptions including access to online multiplayer, free and discounted monthly games and access to Xbox exclusives and any other games included in the Game Pass catalog.
Source: IGN.com Microsoft Might Combine Xbox Game Pass, Xbox Live Subscriptions