Time-based retrieval of Facebook posts
Valid from Pega Version 7.2.1
You can now control the amount of data that is retrieved from Facebook data sets by using the new search functionality for Facebook data set records. You can limit the retrieval of posts to any number of past weeks, days, hours, or minutes to get only the data that is relevant to your business objective or that you lost as a result of a system outage or failure.
For more information, see: Improved Free Text Model rule type.
Improved monitoring of data flow runs
Valid from Pega Version 7.2.1
To monitor the status, progress, and statistics of a data flow run, open it on the Data Flows landing page. Use the run and distribution details to report on data flow progress and possible service-level agreement (SLA) breaches. Run details are available at the node and partition level. Component-level statistics are available for the run, nodes, and partitions.
For more information, see the Data Flows landing page.
Support for advanced validation conditions for fields on a form
Valid from Pega Version 7.2.1
You can now create complex conditions to validate fields on a form to ensure that a step proceeds only when user input meets expected values. Use the AND and OR operators inside conditions so that the conditions can reference more than one field.
For more information, see Advanced validation conditions for fields on a form.
Support for advanced conditions on processes in a stage
Valid from Pega Version 7.2.1
You can now configure advanced conditions on a process in a stage to ensure that the process starts only when user input matches expected values. Use the AND and OR operators inside conditions so that the conditions can reference more than one field.
For more information, see Advanced conditions on processes in a stage.
Field value inspector in Live UI
Valid from Pega Version 7.2.1
Easily identify and translate field values with the field value inspector. You can also use the field value inspector to validate translations and update missing or incorrect translations. The field value inspector is on the Localize tab of Live UI.
For more information, see Field Value Inspector.
Categorize repeating dynamic layouts
Valid from Pega Version 7.2.1
Rows of a repeating dynamic layout can be categorized by a property. Categorization is useful for creating date-based navigation or categorizing list items. You can also set the maximum height of a repeating dynamic layout in the Presentation tab of the repeating dynamic layout properties. You configure categorization on the Operations tab of the repeating dynamic layout.
For more information see Repeating dynamic layout - Operations tab.
Adaptive learning without using an interaction ID
Valid from Pega Version 7.2.1
When you configure the Strategy shape in a data flow to capture the response to previous decisions, you do not have to provide an interaction ID. Instead, during the process of adaptive learning, adaptive models can query the Event Store data set over a specified period of time to retrieve decisions that were made for each response. This way, you eliminate the need to store the interaction ID on the client side.
For more information, see Delayed learning of adaptive models.
Flexbox-based dynamic layouts not supported for Android 4.4 and earlier
Valid from Pega Version 7.2.1
Flexbox-based dynamic layouts are not supported in Android 4.4 and earlier. When developing applications to be used on devices running Android 4.4 and earlier, use the inline-block layout mode for dynamic layouts.
Improved engine startup times
Valid from Pega Version 7.2.1
Performance enhancements in this release decrease engine startup times for new Java virtual machines (JVMs) and improve rule assembly for libraries. JVM startup times are faster because rule utility libraries and functions are no longer generated at startup. For more information, see Extract marker file not created at startup.
MBean Javadocs download file
Valid from Pega Version 7.2.1
The Pega 7 Platform MBean Javadocs are no longer provided in the distribution image; however, you can download the 
MBeanJMXJavadoc.zip file that was previously provided in the distribution image.
You can also use JConsole, which is included with the Java Development Kit (JDK), to obtain MBean information. The JConsole MBean tab provides attributes, operations, notifications, and other information on all the MBeans that are registered with the MBean server.