The QtCreator 2.2 release contains bug fixes and new features.

Below is a list of relevant changes. You can find a complete list of changes
within the logs of Qt Creator sources. Simply check it out from the public git
repository. For example:

git clone git://gitorious.org/qt-creator/qt-creator.git
git log --cherry-pick --pretty=oneline origin/master...origin/2.1

General
   * Added support for running user defined external tools (Tools->External)
   * Moved toolchain definitions out of Qt versions. You can now define
     toolchains in Tools->Options->ToolChains. Creator now supports
     more than one instance of each kind of toolchain.

Editing
   * Add new Inkpot color scheme
   * Moved 'Open in External Editor' to Tools->External->Text
   * Add UTF-8 BOM support

Project Support
   * QMake project support should be more robust against syntax errors
   * Treatment of command line arguments of processes started from build
     and run configurations underwent heavy modifications:
     - argument lists use native shell syntax; this affects quoting and
       environment variable expansion most
     - the SOURCEDIR and BUILDDIR environment variables were replaced
       with %{sourceDir} and %{buildDir} macros
     - this affects working directories and executable paths as well

Debugging
   * Rewrote debugging engine using the Microsoft Console Debugger (CDB)
     for debugging executables built with Microsoft Visual Studio,
     resulting in significant speed-up and better display of data
     types, supporting both 32bit and 64bit versions of the
     Debugging Tools for Windows.
   * Made it possible to pin debugger tooltips.
   * Reworked global architecture to allow multiple debugging sessions (for
     different projects, combined Qml/C++ debugging, project 'snapshots', ...)
   * Reworked breakpoint handling: new special breakpoint types for "break
     on throw", "break on main", data breakpoints.
   * Introduce combined c++/qml debugging (combined stack, cross-step) (gdb only)
   * Rework per-type and per-item selection of display formats
   * New dumpers for QTextCursor, QTextDocument, __m128, QScriptValue
     QBasicAtomicPointer, bit fields, boost::shared_ptr (gdb only)
   * Improve dumpers for QRegion, QVariant (custom types), QSharedPointer,
     QMultiMap (QTCREATORBUG-3122), QObject, QWeakPointer
   * Make alphabetic structure member sorting optional
   * Make dumpers robust in case of missing debug information
   * Improve python dumper profiling support
   * Improve stepping performance
   * Enable breakpoint setting from a disassembler view, QTCREATORBUG-3667
   * Fix display of shadowed variables.
   * Fix display of data containing quote characters, QTCREATORBUG-3084
   * Fix display of C style 'typedef struct X { ... } X; 
   * Fix stack/break view updates after manual module loading, QTCREATORBUG-3427
   * Fix 'Jump To/Run to' when in instruction-wise mode
   * Several fixed to the "watcher" handling
   * Allow re-running debugger engines, QTCREATORBUG-3073
   * Robust process control after -exec-interrupt errors, QTCREATORBUG-2850
   * Robust detection of Qt-in-namespace builds
   * Handle "live updates" in the memory view
   * Make memory view writable (gdb only)
   * Improve starting debugger session directly from the command line

BinEditor:
   * Visualize data differences after updates
   * Fix selection if cursor is left of anchor
   * Allow copying also if selection is "backwards"
   * Do not draw blinking cursor when there is a selection


Help

C++ Support
   * Add QuickFix for implementing setters/getters for a Q_PROPERTY
   * Add documentation about QuickFixes
   * Fix switch statement indentation for GNU and Whitesmiths
     style, QTCREATORBUG-2994
   * Fix indentation of labels

QML/JS Support
   * Gui cosmetics in JS debugger: Show stack frame level, only valid
     line numbers in stack view, do not show function code, show dummy
     child entry for empty arrays
   * Add wizard for creating JavaScript files, QTCREATORBUG-3070
   * Add local-file completion for url properties, QTCREATORBUG-2619
   * Add warning about invalid files in url properties
   * Add file name completion in imports, QTCREATORBUG-3067
   * Add a locator filter for JS functions, QTCREATORBUG-2607
   * Add JSlint-style warnings about common JS pitfalls, QTCREATORBUG-3071
   * Add completion for attached properties like Component.onCompleted
   * Allow QML modules to ship predumped type description files.
   * Reenable instantiating component scope detection, QTCREATORBUG-2835
   * Improve error reporting of failed plugin dumps
   * Complete a trailing '{' for 'A on b' object bindings, QTCREATORBUG-2642
   * Highlight capitalized types, QTCREATORBUG-2658
   * Re-dump a plugin if the shared library/dll changes, QTCREATORBUG-3047
   * Build qmldump in debug and release version on Windows, QTCREATORBUG-3549
   * Change qmldump to output QML instead of XML
   * Fix automatic '.' import to also pick up QML modules, QTCREATORBUG-3768
   * Fix code model update when files are renamed, QTCREATORBUG-2986
   * Fix incorrect completion when brace is on separate line, QTCREATORBUG-2658
   * Fix quote autoinsertion in string literals, QTCREATORBUG-2155, QTCREATORBUG-3244
   * Fix '{' not being an electric character, QTCREATORBUG-3405
   * Fix indentation of 'foo: Namesp.Type {', QTCREATORBUG-3371
   * Added qml tooltips for property inspection at debug time
   * Extended QML Observer for inspection and tweaking of item's properties
   * Added navigation of the object tree in the QML Observer through a crumble path

FakeVim:
   * Implement Ctrl-N/Ctrl-P
   * Implement 's' in visual block mode
   * Fix Alt-Gr handling on Windows
   * Handle more Ctrl-W + <x> commands

Platform Specific

Mac

Linux (GNOME and KDE)

Windows

Symbian Target
   * Added support for the new on-device debugging agent (CODA)

Maemo Target

Designer

Version control plugins

Wizards
   * Support new keywords %MONTH% and %DAY% for C++ template file

Misc
   * MemCheck (from Valgrind) integration (Linux, Mac)
   * Create infrastructure to setup "soft dependencies" between plugins
   * Add a little tool 'qtpromaker' doing the job of 'qmake -project', but
     much faster to make Qt Creator usable to quickly inspect and navigate
     "alien" codebases a way to easily set up dummy .pro files is needed.
   * Start documenting Qt Creator's coding style guidelines

Additional credits go to:
   * The Inkpot color scheme was based on the Vim color scheme by
     Ciaran McCreesh, adapted for Qt Creator by Jan Kundrát and
     subsequently updated by Campbell Barton.