Version 2 of GeoExt is the successor to the GeoExt 1.x-series and is built atop the newest official installments of it's base libraries; OpenLayers 2.13.1 and ExtJS 4.2.1.
We are working hard on supporting ExtJS 5 with an upcoming release. Expect a pre-release that is capable of working with ExtJS 4 and 5 in the next days.
Since version 2, GeoExt is based upon the newest Ext JS 4.
This means GeoExt can be used just like any other Ext 4 component, and applications making use of GeoExt 2 also profit from Ext JS enhancements like charting, a harmonized API with Sencha Touch and a sophisticated single-file build tool.
The current released version of GeoExt is 2.0.3.
Please download GeoExt 2.0.3, use it, and give feedback. Thanks!
A GeoExt.Action is created to insert an OpenLayers control in a toolbar as a button or in a menu as a menu item.
A popup is a specialized window that supports anchoring to a particular location in a MapPanel.
How to create a printable PDF with GeoExt.data.MapfishPrintProvider and GeoExt.PrintMapPanel.
The FeatureRenderer renderers arbitrary OpenLayers.Feature.Vector objects given a list of symbolizers.
Of course you can still use GeoExt 1.x.
We will still be fixing bugs in the 1.x-series, but our development will mainly focus on GeoExt 2 and above.
Consider using the new and shiny GeoExt 2 when you decide to refactor your code or start a new project. As we strived for a very harmonized API between GeoExt 1 and 2, upgrading shouldn't be too hard.