Herewith summarise the upgrade...
Create and open catalogs -- A catalog is how Lightroom tracks the location of files and remembers information about them. A catalog is called a library or library database in Lightroom 1.0. In Lightroom 1.1, the terminology has been updated and you can easily create and open different catalogs in Lightroom 1.1.
Import and export catalogs -- Export a group of selected photos as a new catalog or import photos from another catalog into an existing catalog.
Synchronize folders -- Synchronizing folders provides the option of adding files that have been subsequently added to the folder but not imported into the catalog, removing files that have been deleted, and scanning for metadata updates. The photo files in the folder and all subfolders can be synchronized. You can determine which folders, subfolders, and files are imported.
Enhanced DNG export settings -- DNG (digital negative) file creations now support the full set of conversion options. You can specify the JPEG preview size, select an image conversion method, specify a lossless compression, and determine whether to embed the original camera raw file. Lightroom lets you update the DNG preview on request.
Additional metadata fields and presets -- The Metadata panel includes new options for large captions and location. The panel also includes new options for e-mail, URLs, and more. You can perform many actions, such as resolving metadata conflicts and opening a folder, by clicking the buttons to the right of the metadata fields.
Hierarchical template folders -- Template panels now let you create additional folders with parent-child relationships. For photographers with a growing number of develop, print or web presets, this folder structure provides additional options for organizing photos.
You can also store presets with the catalog file for easy mobility.
Painter tool -- In Lightroom 1.0, you apply keywords to multiple images in Grid view by using the Keyword Stamper tool. In Lightroom 1.1, the Painter tool replaces the Keyword Stamper tool. Not only can you use the Painter tool to apply keywords to photos, you can also apply labels, flags, ratings, develop settings, metadata, and rotation settings. You can click photos or drag across them as if painting.
Remove Red Eye and Remove Spot tool enhancements -- In Lightroom 1.1, the Remove Red Eye tool has been improved to make it easier to detect and remove red eye. The Remove Spot tool has also been improved to make it easier to repair blemishes in photos.
New develop settings -- In the Develop module, noise reduction and sharpening tools have been improved, and the Basic panel includes a new clarity control for adding extra punch to your images.