I am pleased to announce the release of the PI Web API 2015 Community Technology Preview (CTP). You can download the software from our Technical Support website. This CTP release includes several enhancements such as write support for PI System configuration data, evaluation of performance equations, bulk time series data calls against Element or Event Frame streams, gzip compression of responses, and an OData service. We hope you are able to download and test this software soon. We would like to release this software in January 2015. Questions and feedback should be sent to firstname.lastname@example.org.