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Notices / Schedule

Firefox 4 Beta

Firefox 3.6.9 & 3.5.12

Firefox 3.6.10 & 3.5.13

  • Draft schedule will be released this week
  • We have already been marking bugs as blocking and approving nominated patches

Blocker Report

Firefox 4 Beta

Firefox 3.6.10

Firefox 3.5.13

Firefox Development

(from our goals):

  • [ON TRACK] Feature complete Firefox 4
    • [DONE] Switch to Tab
    • [DONE] App Tabs - Scope for 4.0 reduced (non-global), near feature complete.
    • [DONE] Extension Manager - Bug list is converging, still a lot of work to do.
    • [DONE] Web Console
    • [ON TRACK] Notification UI - Geo and EM notifications done, http auth next.
    • [ON TRACK] New Theme - Windows and Mac good, Linux catching up now
    • [DONE] TabCandy Panorama
    • [AT RISK] Silent updates on Windows
    • [DROPPED] Inspector
    • [DROPPED] Account Manager - WIP patches posted, but we can't contain the review load and code risk.
  • [AT RISK] Dirty profile startup within 20% of clean profile startup (modulo extensions, plugins; on windows)
    • Current status: Lots of data has been collected and analyzed, but no solid conclusions have shaken out.
    • Details page
    • Shawn has an updated blog post. Read it for more info.
    • Bugs on file that help:
      • Excessive cookie i/o bug bug 572223 (fixed)
      • Session Restore negatively impacts startup time based on the number of tabs loaded bug 582005
      • Suboptimal SQLite page size bug 416330 (fixed)
      • Provide a global VACUUM component bug 541373


(there is a team-by-team goals breakdown, as well)

  • [DONE] Javascript performance near or even with Chrome 5 on their benchmarks (within 20% on SS, 30% on V8), with substantial wins on our benchmarks. (Windows, in-browser.)
  • [DONE] Hardware acceleration of video and other HTML and SVG content, as well as user interface, on by default for compatible hardware on all Tier-1 desktop and mobile platforms.
  • [DONE] Fully support the WebGL 1.0 spec, with support turned on by default in a Firefox 4 beta on platforms that support OpenGL or OpenGL ES.
  • [MISSED] security: zero reproducible high/crit > 30 days
  • [DONE] Support multi-process Fennec.
  • [DONE] Support Jetpacks running in separate processes and never blocking the Fennec UI. NOTE: jetpack team hasn't actually integrated this code yet, but it works in small test environments.



  • Beta 5 is good to go with Direct2D hardware accelerated rendering.
  • This week, we will be turning on Direct3D hardware accelerated compositing of layers on all Windows platforms.
  • You can test hardware accelerated compositing of layers by setting the pref layers.accelerate-all. However, there are some (huge) known issues on OS X, so we suggest you not turn it on for OS X quite yet.
    • If you run into trouble, run Firefox in safe mode - hardware acceleration is disabled in safe mode.


  • bug 130078 landed
    • Some regressions; biggest issue is screen readers being mostly broken on Windows due to sniffing of our HWND hierarchy (bug 591874)
    • Known Tp regressions on some platforms because paint suppression in loading documents is effectively disabled; patches in bug 591435 will turn those regressions into wins


  • Remote XUL and XBL now disabled, landed for beta5 (sicking)

Tree Management

  • Try What You Want
    • The TryChooser is running in production now which allows you to select the specific try builds/test/talos runs you want (as well as which platforms) in your hg commit comment. Please see documentation and give it a go! This new feature gives devs more self-serve tools, and with more people using it will save on builder cycles thus reducing try wait times.
    • If you want a test/talos suite(s) (re)triggered, please use this handy template for bugzilla with much information already entered for you


  • bug 533038 will stop unpacking extension XPIs by default in beta6.