The Xbox Insider programme is something you can easily join and the advantages are that you can gain access to early Xbox features, updates and some games still in development. You can also give feedback on current features and share your opinion to improve Xbox in the future.
To get started you will first have to download the Insider Hub.
- Navigate to the Store tab on the dashboard or select Store in the guide.
- Select Search.
- Search for the Xbox Insider Hub.
- Select Get/Install from the product page.
The time that console updates will be available to you will depend on which Preview Ring you are apart of. Naturally, you will start off at the bottom, but the more Insider Quests you complete will allow you to gain access to the higher tiers.
These are the current Preview Rings:
Alpha Skip-Ahead – Open on an “invite only” basis and receives updates as part of a different future branch. This ring receives updates far ahead of General Availability (GA), with features that may not exist in the other rings.
Alpha – Open on an “invite only” basis and receives updates at the earliest point in the preview window for the current development branch.
Beta – Open to Xbox Insiders with a Program tenure of 3 or more months and an Xbox Insider XP Level of 5 or higher. This ring receives updates shortly after Alpha.
Delta – Open to any Xbox Insider with a tenure of 1 or more months that has reached Xbox Insider Level 2 or higher. Depending on certain edge cases where further attention is required from Alpha or Beta rings, Delta Insiders may receive system updates before Beta, though this is not a common scenario. Additionally, while early system updates are not guaranteed across the Delta ring, all Delta Insiders will receive the update prior to GA.
Omega – Open to anyone and receives system updates shortly before the GA release.
You can find more information here https://insider.xbox.com/en-us/