jd writes "IBM's Journaled Filing System becomes the second commercial filing system for Linux to reach the exalted 1.0 status! It also follows close on the heels of another of IBM offering, the PThreads Next Generation project, which also hit 1.0 today." Check out this LWN story on it as well. It's worth noting that this is a free as in open source version - GPLed. There will be another commericial version as well.