Xbox Live Gold will cost $60 per year on Xbox One, as it does now, Microsoft confirmed today.
In a letter to Xbox Live gamers, Microsoft's Marc Whitten said:
We are bringing the Xbox Live Gold membership from Xbox 360 to Xbox One starting at the same $5 per month for a one-year membership, and now anyone in your home can access many Xbox Live Gold benefits on your Xbox One at no additional cost. Your primary Xbox Live Gold membership also travels with you to any Xbox One system. Xbox Live Gold offers a premium interactive entertainment service on Xbox One that spans across games, TV shows, movies, music, sports and more.
Whitten also said that Xbox Live Gold users will have access to Skype group video calling which will be compatible with Skype users on PCs and Macs.
Whitten made no mention of online multiplayer no longer being a paid feature. So, until we hear otherwise, assume it will still be Gold-only.