Andy Bower, of Object Arts, announced this in the Dolphin Smalltalk newsgroup yesterday...
“We will continue to distribute the free version of Dolphin X6 indefinitely but, as from today, we will not be selling the Professional version. Some limited support will remain in place for existing users of X6 but there will not be a future major release of Dolphin for .net (or Mac or Linux).”
What a shame to see such a great product fade away like this.... At least, there is the free version. I encourage you all to download and use it. It will help you to understand why this is such sad news.
The Object Arts Web Site
Future development of Dolphin discontinued (blog entry)
Download Free Edition of Dolphin Smalltalk