Oracle new filesystem??

I've just found out that Oracle is developing a new file system for Linux, I really don't understand what they are doing...

They started with OCFS, than OCFS2 (every thing is OK till now), than ASM and telling every one that this is the best choice for them and not OCFS/OCFS2, and now BTRFS (Btree File System).

What next?

Oded.