Remove CopilotX references now Chat is a first-class feature.

.instructions/3. challenge exercises.md

@@ -26,7 +26,7 @@ Now you've had an opportunity to get started using GitHub Copilot, we have a num
 
 9. Once you're happy with a few unit tests, save the file and return to the terminal window. Enter ```npm test``` and press **ENTER** to execute the unit tests again.
 
-**NOTE:** The advanced features currently available in GitHub CopilotX Chat, provide far more sophisticated assistance in writing unit tests, including the ability to write complete test suites for you. At the time of creating this exercise, Copilot Chat was only available as a pre-release experiment.
+**NOTE:** GitHub Copilot Chat provides far more sophisticated assistance in writing unit tests using [slash commands](https://docs.github.com/en/copilot/github-copilot-chat/copilot-chat-in-ides/using-github-copilot-chat-in-your-ide#slash-commands-1). As a challenge, see if you can use Copilot Chat to create unit tests and then add coverage for edge cases.
 
 </details>
 

.instructions/4. additional resources.md

@@ -6,9 +6,7 @@ To learn more about GitHub Copilot, here are a few resources you might be intere
 - [Benefits of Copilot for Business](https://www.youtube.com/watch?v=iWutvppVwjw) (YouTube)
 - [GitHub Copilot tips and tricks](https://www.youtube.com/watch?v=1qs6QKk0DVc) (YouTube)
 
-**Copilot X videos** (GitHub's vision for what Copilot might evolve to in the future.)
+**Copilot Chat videos**
 
-- [The Download: Everything You Need to Know About GitHub Copilot X, Generative AI Roundup and more!](https://www.youtube.com/watch?v=wNwa4GKryXI0) (YouTube)
 - [Getting started with Chat](https://www.youtube.com/watch?v=3surPGP7_4o) (YouTube) 
 - [GitHub Copilot: Using Voice to Code](https://www.youtube.com/watch?v=Bk7UdqoZUDk) (YouTube)
-

.instructions/workshop organisers.md

@@ -8,11 +8,10 @@ Duration | Activity | Notes
 15 mins | Copilot presentation | Deliver a presentation on the benefits of Copilot and how it works
 30 mins | Open Q&A | In delivering many workshops to date, we've found attendees always have many questions about Copilot including how it works, what languages are supported, how it can be used in their day-to-day work, etc. We recommend you allow time for this. Make sure you're familiar with the [differences](https://github.com/features/copilot#pricing) between Copilot for Business and Copilot for Individuals. You should also review and familiarise yourself with the Copilot FAQ section at the bottom of [this page](https://github.com/features/copilot).
 60 mins | Workshop | 15 minute instructor walkthrough of [core exercise](<./2. core exercises.md>), followed by 45 minutes for the [challenge exercises](<./3. challenge exercises.md>). You may even have time to allow some of the participants to share how they solved the challenge exercises.
-15 mins | A look at Copilot X | Finish off the workshop by demonstrating [Copilot X](https://gh.io/copilotx) - GitHub's vision for the future of Copilot. This is a great way to end the workshop and leave attendees excited about the future of Copilot.
 
 #### Post event survey
 You should also provide a short survey at the end of the workshop to help assess the impact of the workshop and allow you to iterate and learn for future workshop deliveries. If you wish, you could copy and edit this [sample survey](https://forms.gle/gq95Y18S4K7M9Jst8) using Google Forms.
 
 #### Need help running a workshop?
 
-GitHub has experienced solutions engineers that may be able to help you deliver a workshop. To learn more, please email info@copilot-workshops.com
+GitHub has experienced solutions engineers that may be able to help you deliver a workshop. To learn more, please email info@copilot-workshops.com