Goodbye Google Gears, Hello HTML5
What does this mean for current Gears users? Well, support will be severely limited, but maintained until there's a way to port entire apps (including their userbases) to a standards-based approach. Some Gears APIs have already popped up natively in Chrome, which now includes geolocation and several database-related APIs.
Check out Google's blog post for the skinny on what is and isn't supported so far. If you're a developer using Gears, you can also take advantage of Google's invitation to reach out and ask questions about the future of the Gears features your apps use.