Activity Streams were first introduced in version 4.1 and have been very well received by people who enjoy all the flexibility they create in filtering and sorting content in a community for easy discovery of what is being posted.
As with any new feature, we received a lot of feedback and have had time to take that in and make improvements to mature the Activity Streams with key changes in 4.1.9 being interface, performance, and bug fixes in the system.
One recurring theme we heard were people saying "the new Activity Streams cannot do..." when actually they could do it but the options were not obvious. We used to have the options in a large drop down box that users could edit and then save to update their Stream. This meant that options were not clearly visible and therefore people did not even know all the powerful settings available to them. So in 4.1.9 we have moved those options into a new dynamic filter bar.
With the new filter bar you see all your options available right there. We also changed the interface so Streams instantly update when you make a change. You no longer have to click save and update, wait for interface to collapse, and so on. Now your changes instantly update your Stream.
When you do change your Stream settings a save button appears prompting you to save your new selection. You can choose to save if you like the new options or not if it is just a temporary change you made. If you edit filters on a stream you do not own then it will prompt you to save your options as a new stream.
We hope you enjoy this more dynamic approach to Activity Streams.