While on the Microsoft E3 stage, a new initiative called "Xbox Play Anywhere" was announced , and going forward will mean that any titles purchased sporting this branding will be playable on both the Xbox One and Windows 10 PC at no additional cost.
In a statement on Xbox Wire, the company stated that this is all a part of their vision for the future of Xbox:
We see a future full of choice, without being constrained by technical boundaries, devices people play on, or console generations.
As this shift continues, we want to ensure that you have more freedom and opportunity to play the games you want, with the people you want, and on the devices you want. We see this not only as a gaming world where you can play without boundaries, but one that goes beyond generations.
At Xbox, we believe you should have a diverse and expansive library of games. That’s why, in addition to the many exciting games we announced today for Xbox One and Windows 10, we unveiled the new Xbox Play Anywhere program that will enable you to buy a game once and play it on both the Xbox One and your Windows 10 PC.
The list of games that are currently a part of Xbox Play Anywhere include:
The majority of these are upcoming titles scheduled to release over the coming year, and there has been no word at this stage as to whether the program will be retroactively added to any other titles released prior to Microsoft's E3 2016 Briefing announcement.