The api structure should be fairly well nailed down now, and the beginnings of Views integration has been added. This is still not a fully stable module, and there are definitely still some bugs.
This is primariy a bug fix release, but minor new features have been added or backported from the 6.x-2.x version.
Note that the schema.xml and solrconfig.xml have changed, but should be backward-compatible with existing indexes. Update these xml files in your Solr conf directory and restart Solr.
#864160 by pwolanin: Allow the caller a last chance to modify the query and params.
#847040 by Agileware: Allow other modules to use facet only searching.
#536990 by pwolanin | jpmckinney, janusman: always index content as an anonymous user.
#751004 by jpmckinney, camidoo, rjbrown99, pwolanin: fix use of CCK API, handle NODE_BUILD_SEARCH_INDEX exclusion setting in the UI.
#373824 by pwolanin: show count of attached files to mimic upload module with node search.
#853564 by pwolanin: fix regression from #614644 - still need to see if there is POST data.
#592522 by pwolanin, quaoar: use multi-table sytax for MySQL to avoid killer sub-selects.
#614644 by pwolanin: Improved compatibility with other forms (based on Drupal 7 core issue patch).