[tbb-bugs] #16940 [Tor Browser]: Implement loading (only) local change notes after a Tor Browser update

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#16940: Implement loading (only) local change notes after a Tor Browser update
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 Reporter:  gk                              |          Owner:  tbb-team
     Type:  enhancement                     |         Status:  needs_review
 Priority:  Medium                          |      Milestone:
Component:  Tor Browser                     |        Version:
 Severity:  Normal                          |     Resolution:
 Keywords:  tbb-5.5, TorBrowserTeam201511R  |  Actual Points:
Parent ID:                                  |         Points:
  Sponsor:                                  |
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Comment (by mcs):

 Replying to [comment:10 gk]:
 > I tested the update changes by applying a MAR-file by hand and then the
 currently specified URL got loaded without `about:tbupdate?` prepended. I
 guess there are people with a bunch of tinfoil-hats out there doing this
 kind of thing regularly, so I was wondering.

 Ah. Kathy and I had not considered that scenario. I think we will remove
 the app.update.postupdate pref. check; doing so will cause about:tbupdate
 to be opened whenever a restart occurs after new bits have been installed.
 I think about:tbupdate will also be opened in a downgrade situation, but
 that is probably OK too (and downgrades should only happen if someone
 manually applies an update or if they modify hidden prefs such as
 browser.startup.homepage_override.mstone and
 browser.startup.homepage_override.torbrowser.version).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16940#comment:11>
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