New in this release: dockable windows in the main console, new message pane, support for Posh v2 modules, and configurable, recently opened files function that remembers your tabs in the editor. See the release notes attachment for details.
http://www.powergui.org/downloads.jspa
Dockable panes in the Admin console: now you can just open the View menu and select the panes you need to be displayed; then you can right-click the title bar of any pane, and select Dockable– to drag, resize, or close the window, arranging the panes in the way you like. Messages pane: this feature will be extremely helpful in maintaining the tool. Select Messages from the View menu, and all errors, warnings, and information messages produced during PowerShell commands execution or scripts operation will become available for tracking in a special Messages pane. PowerShell 2 modules support: PowerGUI now allows you to work with PowerShell modules. Modules are the new form of PowerShell cmdlet/function libraries introduced in PowerShell v2. Like the snapins, modules are accessible to PowerPacks. PowerGUI supports intellisense, F1 help, and debugging for PowerShell 2 cmdlets from module scripts. Recently opened files: PowerGUI will “remember” the files you opened in Script Editor, and reopen them at startup, with the breakpoints, bookmarks, positions, splitted windows – to make your work with Script Editor even more convenient. Intellisense for function parameters in PowerShell 2: note that the function needs to be loaded in PowerShell before it appears in intellisense, which means that it is not enough to type its definition - you actually need to run your script or profile loading your function libraries. Re-worked Actions: instead of predefined Links/Actions/Common Actions groups, PowerGUI now lets you organize your actions in any custom categories. Note that Link (which used to be a separate entity) has been replaced with another entity – Action, outputting its results in a nested view.