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Will there be a straight upgrade path from 10.10 to 11.04 (Gnome to Unity), and will there be measures put in place to ensure that Gnome is properly "cleaned" out on the way?

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Actually, I hope GNOME doesn't get "cleaned out", as that would be data loss for those people who want to keep using GNOME. – JanC Oct 28 '10 at 0:35
up vote 13 down vote accepted

Unity is simply a new shell for Gnome and will probably be installed as part of the current ubuntu-desktop metapackage. This means that upon upgrading to Ubuntu 11.04 Unity will be installed by default with the upgrade.

I am assuming that Gnome 2 is planned to be installed as well, so users both upgrading and freshly installing will get both, just Unity by default.

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I'd like to confirm both that the Gnome2 experience will be installed everywhere alongside the Unity shell, and that we consider Unity to be a shell for GNOME. As we move to GNOME 3 applications, we'll preserve the GNOME 2 shell environment as a 2D experience as long as possible. – Mark Shuttleworth Nov 4 '10 at 14:31

We will of course provide an upgrade path, I don't know what you mean by "cleaned" so please provide more detail in your question.

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My apologies. NightwishFan answered my question above. I believed that Unity was going to be "developed" into a Desktop Environment on it's own, versus it being a "shell" for Ubuntu. – Jay Oct 28 '10 at 0:35
I definitely will, as soon as my 10 minute wait is up :) – Jay Oct 28 '10 at 0:42

In the past when we have major such changes (metacity to compiz, for example) to the defaults upgrades kept their current settings and new installs got the new stuff.

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Having just upgraded from 10.10 to 11.04, it has replaced my 'old' desktop with Unity. Have had a loooong search to find out how to replace it (SystemSettings->System->LoginScreen - switch to 'Ubuntu Classic')

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It shouldn't take you that long, next time just ask here! – Jorge Castro May 6 '11 at 17:04

I believe that the statement was that "Unity will be the default UI for clean installs on hardware that will give a satisfactory performance" (or something like that), so that suggests that if you do an in-place upgrade, you will stick with stock GNOME

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My answer might be wrong then if the statement was "Clean install". Do you have a source? – NightwishFan Oct 28 '10 at 0:43
@NightwishFan Here's Mark's keynote if you want the details: – Jorge Castro Oct 28 '10 at 3:15

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