Improvements:

• Ability to not have anonymous registrations
• Improved support of forms in IE9
• Improved editor support in IE9 mobile
• Most templates have been enhanced to better take advantage of the viewport on mobile devices

Improvements:

• Registration fields can now be configured as required / not required
• IE9 content editor fixes

Improvements:

• County no longer required for registration
• HTML5 Geolocation API support in Locator
• Google Maps Geolocation API updated to v3
• IE9 support
• Enhancements to stylesheets and scripts to reduce download times
• WebKit editor improvements (RemoveFormat)
• Goes By Name
• View Forms: Event date can now be specified during manual event entry

• New extension interface that allows for multiple views in the same page
• Opera Mobile 10 support

• View Forms integration with events
• Custom Fields for event recurrences
• Ability to display the Login bar inside of a sidebar
• View Forms Realtime on screen keyboard for enhanced touch / mobile experience
• MetaWeblog support

• Atom feed support
• Atom Publishing Protocol support
• Flock 2 Media Stream (MediaRSS) support in photo views
• View Forms Filter
• Konqueror 4.1 content editor support
• Edit mode highlighting of items / regions within a page
• Collapse / expand support in content editor for Gecko / Opera / WebKit
• Apache redirect support

• New features that are being developed that offer new or significantly changing behavior will often be made available in the Preview Center. This allows interested individuals to participate in the development of these features before they are released in the product. The Preview Center is linked from http://www.bossprosites.com.
• When a platform release is being prepared, we will announce the new features and fixes that are planned with that release will be announced on the Release Blog. This area allows our customers to express interest in particular features being included in a particular release or particular features being pulled from a release. You are presently reading the Release Blog!
• After a platform release has been finalized, it is scheduled for delivery to a particular production server. For more information about a delivery to your production server, please contact us.

All of these places are able to be subscribed via your favorite RSS aggregator! Isn't that really cool?

Update: 7/12: Link to Preview Center updated

• Improved Safari support
• Accessibility title captions are now editable for images and videos
• Easily embed video into your page with Inset Video (Windows Media, Flash). Also easily set padding, just like you can with an image
• Multiple checkboxes in the same form can now be part of the same group
• For organizations that also use Access ACS, the platform now allows users to Goto ACS more easily by storing their Access ACS credentials inside of their website credentials
• Geocoding of addresses now also supports using the Google Maps geocoder, for sites already using Google Maps technologies
• Improved zone switching within My Groups and User Viewer.
• More flexible phone number parsing now accepts extensions marked by "ext."
• Newsfeeds now support markup

What do you think of these new features? Exciting, right?!