We are excited to announce the upcoming release of version 2.0 of the PLoS Article Level Metrics application on July 31. Version 2.0 includes many changes under the hood, and now uses Ruby 1.9 and Rails 3.2. The biggest improvements are in how the application processes requests to external services in the background. As with the ALM 1.x application, we will make the source code available at https://github.com/articlemetrics/alm.
The release of ALM 2.0 also includes a few changes to the API, and starting July 31, requests to the PLoS ALM API at http://alm.plos.org have to use the new API format. We have documented the changes in PLoS ALM 2.0 API Changes and at https://github.com/articlemetrics/alm/wiki/API. Please ask any questions you might have in the PLoS API Developers Google Group at https://groups.google.com/forum/?fromgroups#!forum/plos-api-developers.