Following is a summary of the new features introduced by the 2012.1 release:

• Expressions Everywhere
  Nearly all properties of the Chart and Gauge web parts, can now be specified by expressions. Appearance styles (fill, stroke, shadow and text) are also reworked to support both constant specification and specification that is based on expressions. This allows you to bind nearly all configurable aspects of the web parts to user defined parameters and/or data. Expressions are now available even in data source connections, which makes it possible to create dynamic data source binding, based on expressions and parameters. See Property Editors for more info.
  
  
• Controllable Visibility of Essential Chart and Gauge elements
  Chart Areas, Chart Values, Chart Titles, Gauge Areas and Gauge Titles now have controllable visibility. This new feature in combination with expressions can help you dynamically change the type of data visualization (for example flip between area and bar charts, flip between radial and linear gauge, dynamically show/hide titles etc.)
  
  
• Conditional Data Points Appearance
  The filling and stroking of chart data points can now be specified with expressions. This allows you to quickly author complex "color coding" logic only with expressions.
  
  
• New Predefined Parameters
  The set of predefined parameters has been increased to include the following: 
  
  Related to SharePoint User: [UserName], [UserLoginName], [UserId]. With the help of these parameters it is now possible to author audience sensitive expressions (i.e. evaluate to different values, based on who is viewing the web parts).
  Related to Browser: [BrowserName], [BrowserMajorVersion], [BrowserMinorVersion], [BrowserScreenWidth], [BrowserScreenHeight]. With the help of these parameters it is now possible to author browser sensitive expressions (i.e. evaluate to different values, based on the current user browser).
  
  See Parameters for more info.
  
  
• Ability to Consume SharePoint Field Filters as Parameters
  SharePoint Field Filters can now be sent to Chart and Gauge webparts. Because SharePoint Field Filters are supported by nearly all filter webparts that come along with SharePoint (Text Filter, Date Filter, Query String Filter etc.), it is now possible to author complex dashboards, with user driven parameters entirely visually. See Custom Parameters with SharePoint Filter WebParts for more info.
  
  
• Rendering Improvements
  The overall speed of the entire rendering process has been improved. This is due to optimizations in webparts rendering engines, the webparts template models and the storage of temporary image data. Added was a new Image Acquisition Mode - Embedded (selected by default), that eliminates the need for temporary image data and an additional GET request in case the SharePoint page is viewed with modern browsers that support image embedding (Chrome, Firefox, Opera, Safari, IE 9 etc.). IE 8 has limited support for image embedding and such is not present in IE 7 and IE 6. For such old browsers, the webparts automatically falls back to HttpHandler mode.
  
  
• Configuration/Diagnostics Improvements
  The web parts now support full error and command logs, that can help you diagnose problems related to their runtime behavior. The config file has been extended to support session state and auto storage, that smartly chooses between session state, application state and SharePoint specific stores of webpart or web page based temporary data. See The WebParts Config File  for more info.
  
  
• New Data Source Connection - SharePoint Site Query
  The web parts can now connect to a new type of data source - SharePoint Site Query. This allows you to display aggregated data, that is extracted from multiple sites and/or lists. See Connecting to a SharePoint Site Query for more info.
  
• Panel Content Alignment
  Panel content alignment allows you to align the content of horizontally or vertically adjacent chart, legend and title areas. This allows you to create better looking dashboards with multiple panels.
  
• Twin Charts
  Twin charts allow you automatically align two adjacent charts areas.
  
• Radar Axis Improvements
  Radar Axis Category labels have been improved to support different position, fit and alignment modes.
  
• Step Line Improvements
  The Step Line has support for automatic data resampling. This allows for the visualization of very large datasets.
  
• Surface Improvements
  The Triangulated Surface has an option to simplify the data set. This allows for the visualization of large XYZ data sets.

 

Nevron Vision for SharePoint 2012 Vol. 1 fixed the following problems:

• Problems Related to the IE Family of Browsers
  This release fixes many problems related to the most problematic family of browsers - Internet Explorer. We have fixed the overflow problems with webpart preview, data source fields as well as with all editors that can possibly overflow in result to long data source field names. The web-colors picker now highlights the selected and the hovered colors.