What words means most nearly the opposite of OBSOLETE?

Here are some words that are the most nearly opposite of "obsolete":

* Current

* Modern

* Up-to-date

* Relevant

* State-of-the-art

* Cutting-edge

* Contemporary

* New

* Fresh

* In vogue

These words all suggest something that is new, in use, and relevant to the present time, the opposite of something outdated and no longer used.