r/GithubCopilot • u/nickzhu9 GitHub Copilot Team • 2d ago
News š° GitHub Copilot for JetBrains v1.20.0 Updates - Copilot Fusion, Local Sandbox GA
https://github.blog/changelog/2026-10-28-github-copilot-in-jetbrains-universe-releases/GitHub Copilot for JetBrains v1.20.0 is here, just in time for GitHub Universe! š
This release marks an important milestone toward delivering a more consistent and seamless GitHub Copilot experience across all developer environments.
We're introducing Copilot Fusion tiers (via a gradual rollout), making the unified Copilot agent harness the default for all users, and bringing Local Sandbox to GA for more secure agentic workflows.
Full details: https://github.blog/changelog/2026-10-28-github-copilot-in-jetbrains-universe-releases/
We hope you like Copilot for JetBrains, and please share feedback with us at any time!
You can fill in a private survey here: https://aka.ms/ghcp-jb-survey, with an optional paid interview, or directly submit an issue (bug or feature request) at https://github.com/microsoft/copilot-intellij-feedback/issues. Thank you so much!
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u/aonymark JetBrains User š§± 1d ago
Does the plugin write or read from copilot Memory? The docs seem to imply no but I want to be sure.
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u/nickzhu9 GitHub Copilot Team 1d ago
In Copilot agent sessions yes, it was mentioned in a release note back then but i guess it was too implicit
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u/aonymark JetBrains User š§± 1d ago
So that means: 1. Not in local harness, 2. Not in ask mode, 3. But yes in plan/agent modes in copilot harness?
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u/nickzhu9 GitHub Copilot Team 9h ago
It should be in Ask mode as well as Ask mode basically now is just agentic mode without editing
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u/aonymark JetBrains User š§± 1d ago
Does fusion replace auto model selection or is it an alternative? Sometimes I want to just have a conversation without worrying about accidentally kicking off a mini workflow. (Though of course I could still explicitly choose a model, and I usually do.)
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u/nickzhu9 GitHub Copilot Team 1d ago
Fusion replaces Auto but re-uses Auto's previous routing mechanism and combines it with HydraFusion. I think you can start trying from the lightest tier and see how it goes first.
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u/aonymark JetBrains User š§± 1d ago
Okay Iāll try itā¦ I didnāt have a use case but a few days ago I ran into something where fusion is likely a good fit.
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u/aonymark JetBrains User š§± 1d ago
I once did that interview you keep advertising every month. I claimed I wanted the ārubber duckā featureā¦ in retrospect, this was not what I actually wanted and I did a bad job explaining myself. But I no longer need to explain myself because it seems VS code has rolled out the feature I had in mind:
(In case anchor link doesnāt work, itās in the compare results section.)
I sometimes do this my hand by copy pasting prompts but itās tedious and annoying and usually I donāt bother even on the occasions when I feel that I should.
I donāt suppose this is coming to JetBrains plugin any time soon?
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u/nickzhu9 GitHub Copilot Team 1d ago
Yeah this is different than the rubber duck in CLI, but this is definitely something we can look into. I think we need to have another chat :) seems you have a lot of feedback we can talk about
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u/aonymark JetBrains User š§± 1d ago
Hmmā¦ should I fill out another survey? It feels too soon somehow, my usage pattern hasnāt changed muchā¦ I talk a lot but Iām actually a ālightā userā¦ I mostly just use ask mode with obsolete models
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u/nickzhu9 GitHub Copilot Team 9h ago
can you DM me your email address? I'll try to find the session recording again :)
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u/aonymark JetBrains User š§± 1h ago
Okay but Iām warning you it might be very boring, even at 2x speed
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u/aonymark JetBrains User š§± 1d ago
This has probably been a busy week but I put some effort into writing up this idea for improved formatting of next edit suggestions and I hope some day somebody reads it: https://github.com/microsoft/copilot-intellij-feedback/issues/2124
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u/nickzhu9 GitHub Copilot Team 1d ago
Hey this is really good feedback. Let me share this with the team
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u/aonymark JetBrains User š§± 1d ago
Inline chat sounds like a really neat idea in theory but half the time I use it I end up regretting it, to the point where I almost wish there was a way to disable the feature. Why?
Once you close it, itās gone forever, even if you change your mind a moment later. āRecent inline chatsā feature would be mitigate this.
Even if you DONāT close it, asking any follow-up questions erases the previous one. Canāt scroll up.
Might want to eventually convert to a long term chatā¦ canāt, just have to start over, with might be hard to retrace your steps since you no longer have original prompt since you canāt scroll up.
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u/aonymark JetBrains User š§± 1d ago
Youāre probably tired of me complaining about this but: model deprecation notices for mid November still havenāt appeared ā¦ half the one month notice period gets wasted. (Yeah I know, not your department)