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These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
Fixed: The first tab is out of LTP control. [Fx 5.0+]
Fixed: Some random tabs are out of LTP control when Firefox starts. [Incompatibility with NoScript]
Improved: Change "Max. unread loaded tabs" option to "Max. loaded tabs"
Improved: Load tabs first according to "selectOnClose" option if Tab Utilities is installed
Improved: Mark unloaded tabs in all tabs popup
Improved: Compatibility with Firefox 4.0
Removed: Compatibility with Firefox 3.0/3.5
Added: zh-TW locale (thanks to kingsmile)
Added: sr locale (thanks to ДакСРБИЈА)
Added: de locale (thanks to erglo, o.roth (ReinekeFux) von BabelZilla.org)
Added: pl locale (thanks to Leszek(teo)Życzkowski)
Added: sv-SE locale (thanks to Mikael Hiort af Ornäs)
Added: es-AR locale (thanks to Eduardo Leon)
Added: sl locale (thanks to miha)
Added: el locale (thanks to George Malamas)
Added: ja locale (thanks to k2jp)
Updated: fr locale (thanks to freMea)
Updated: nl locale (thanks to markh)
Updated: ru locale (thanks to Пирятинский Виталий)
Updated: pt-PT locale (thanks to mrfyda)
Added: Mark pending tabs in all tabs popup
Fixed: Bug 596502 with Firefox 4.0b7pre
Improved: Startup performance
Improved: Compatibility with Firefox 4 Tab Candy (Load visible tabs only)
Fixed: A blank tab is left after file download for target="_blank" links
Fixed: Wrong url is restored for pending tabs after restart when working with retaining history for new tabs
Fixed: Links from external applications cannot be loaded
Added: highlightUnread option
Added: fr locale (thanks to freMea)
Added: nl locale (thanks to markh)
Added: ru locale (thanks to Пирятинский Виталий)
Added: pt-PT locale (thanks to mrfyda)
Fixed: Local html files cannot be loaded.
Fixed: Links in Gmail body cannot be loaded.
Fixed: Greader v shortcut cannot postpone loading tabs.
Fixed: Post requests are converted into Get requests with postData lost for target="_blank" forms.
Fixed: "Open in a New Window" doesn't work with pending tabs.
Fixed: Sometimes a pending tab has no title or icon.
Fixed: Incompatibilities with Tab Mix Plus, including loading bookmark groups and session restore.
Added: A new option to control which pending tab will be loaded first.
Added: Reload tab to promote priority of pending tabs manually.
Improved compatibility with more tab add-ons on reusing blank tabs
Load pending tabs from left to right
Restore pending tabs after a restart
Auto-reload restored tabs
Use unread marks provided by other tab add-ons
Improved compatibility with Firefox 3.7a4pre
Add italic mark for unread tabs
Fix a bug when opening diverted windows in Firefox 3.0/3.5