Outspark has announced that Fiesta Online will be released in a browser-based edition very soon. The browser version of Fiesta will connect to existing servers so players will have access to characters, achievements, etc.
Outspark has not released information about when the web-based iteration of Fiesta will go live but said that it is currently in development and they are hopeful it will go live later this winter.
Find out more about Fiesta Online.