Whats good about Salesforce Summer 15 Release

Duplicate Management
Im sure you are now aware of this, if not you need to be it will be invaluable to every organisation.
Maintaining clean and accurate data is one of the most important things you can do to help your organization get the most out of
Salesforce. With Data.com Duplicate Management, you can control whether and when you allow users to create duplicate records
inside Salesforce; customize the logic that’s used to identify duplicates; and create reports on the duplicates you do allow users to
save.

DML Options
runAsCurrentUser()
Set to true to make sure that sharing rules for the current user are enforced when duplicate rules run. Set to false to use
the sharing rules specified in the class for the request. If no sharing rules are specified, Apex code runs in system context and
sharing rules for the current user are not enforced.

Search Namespace
System.Search.find(String) method, which performs dynamic SOSL queries
Example
getSObject()  - Returns an sObject from a SearchResult object.