Watch this webinar to discover new and updated Salesforce Platform features coming in the Summer '13 Release including:
Force.com Canvas (GA) -- Force.com Canvas is now generally available and supports multiple canvases on a page, ability for canvases to talk to each other, distribution through standard packaging processes, and more.
Chatter in Apex (GA) -- Chatter in Apex (formerly Connect in Apex) exposes Chatter API objects in Apex, and is now generally available with new classes and methods. The documentation can now be found in the Apex Developer’s Guide.
API Updates -- Lots of API Updates including new objects, SOQL/SOSL clauses, and metadata types for easier deployments.
ISVForce -- ISVForce has many new additions in Summer ‘13 including an Environment Hub for storing easily switching between orgs, installing/uninstalling packages with the API, and creating trialforce signups using the API.