Disc to digital coversion?

No, it is not possible to directly convert physical game media to digital licenses.

You can resell your games and repurchase them digitally on the Xbox Marketplace.

All game saves are stored in the account's cloud storage, so you don't have to worry about losing your progress no matter what you do. You can keep your game installation files on your hard drive if you decide to perform the above; game installs only execute when
a DRM key is present, which is either in the form of the physical game disc in the drive, or your account has already purchased it digitally.

I home that turtle beach makes a coversion kits for all there old headsets.

Destiny(digital)

Evolve(digital)

Halo:MCC(digital)

Sunset Overdrive(maybe digital)

Alien Isolation (disc)

Assassins Creed(disc)

CoD:AW(disc, unless they wow me with MP, then digital)

The only way to get your disc game working on the "All digital" edition of the Xbox One is to purchase the game digitally.

It's not possible to "convert" a disc game to a digital game. Otherwise you could buy a disc, convert it to digital, and sell the disc to someone else who would then convert to digital, sell the disc and so on, until the whole world has the game digitally,
and only one disc was sold.

So the only way to get a digital copy of your disc based game would be to buy the game digitally again.

Since you still can buy "non-digital" consoles with disc drive, you can still get such a console if you want to keep your disc based games. The consoles with disc drive can also be used to download games digitally.

As for getting a digital version for your disc purchase, that probably won't happen, as the publishers would face the problem of their game not selling anymore.

Imagine a person buying the game on disc. Then telling Microsoft, they went digital, get the download version for free, and then sell the disc.

The new disc owner tells Microsoft they went digital, gets the free download and sells the disc.

Then the new disc owner tells Microsoft they went digital, gets the free download and sells the disc.

Then the new disc owner tells Microsoft they went digital, gets the free download and sells the disc.

Then the new disc owner tells Microsoft they went digital, gets the free download and sells the disc.

etc...

Eventually, the whole world owns the game digitally, but the game was really only sold once, causing a huge loss for the game's publisher.

So if you still want to keep your discs, simply don't buy the all digital version of the Xbox One console.