release early, release often

"How TFS Embraced 3-Week Release Cycles"

We Debian releases its stable release each 2 years during this 6-8 years, but I think it's not best schedule. I hear "stable is realy stable, but it's old", you know ;-)

How to get "stable and enough fresh" environment? Is there any way to do so? Well, Microsoft TFS team do such thing - "3-week release cycle", we can learn something from this article, and I try to propose some improvement for Debian.