This question was answered by Chatter on the Discord server (in the channel #official-announcements) on November 10.

"Hi everyone, a quick change up is happening to our roadmap. We are going to be pushing back the ability to burn GLX for GLUSD likely until December and deploy at a more similar timing with our market launch (dates tentative).

Instead, we are all hands on deck with the pack staking launch as our priority. I will get dates messaged behind pack staking as soon as we have QA testing confirmed!

Thanks everyone and hope you have a great rest of your day!"

^{Source: https://discord.com/channels/1001558201306710082/1003725997046235166/1040336261241643098}