DRBD co-author Lars Ellenberg has recently submitted the DRBD kernel module to the linux-kernel mailing list, for possible inclusion of DRBD in mainline Linux. The announcement has created a healthy buzz not only on the list itself, but also on KernelTrap and various media outlets.
What this means is that, at this time, DRBD is undergoing the largest and most in-depth QA review since its inception. Huge thanks to everyone contributing, we love to hear your thoughts!