Is jQuery still relevant? This 3.0 release drops support for edge cases and makes deferreds Promises/A+ compatible
t’s been a long time since we did a major release, and you certainly deserve one. So we’re glad to announce the first alpha of jQuery 3.0!
Despite the 3.0 version number, we anticipate that these releases shouldn’t be too much trouble when it comes to upgrading existing code. Yes, there are a few breaking changes that justified the major version bump, but we’re hopeful these breakages don’t actually affect that many people. The jQuery Migrate plugin can help you to identify compatibility issues in your code as well. Your feedback on the changes in this alpha will help us greatly, so please try it out on your existing code and plugins!
There are actually two releases here. First is jQuery 3.0, which supports modern browsers and environments from IE9 forward. Second is jQuery Compat 3.0, which includes support for IE8.
Read more from the source: blog.jquery.com