Left 4 Dead 2 Future Patches

We already know about "The Passing" DLC for Left 4 Dead 2, but Valve has updated its blog to let us know of other patches on their way before said DLC.
Among the changes being made is also adding bots to the Infected team during a versus match, so as to make sure things are even. This seems like something that could have been done much earlier, as I recall people ragequitting in regular ol' Left 4 Dead and sometimes being the only Infected in a Versus match.
They even casually mention that it will make more interesting and possible the idea of a 1vs1 match, which I never even contemplated.
Also, it appears they are going to be experimenting with the auto-spawn feature during finales of the campaigns' versus modes. To quote:
So how do finales currently play out? Across all finales in Left 4 Dead 2 currently, a single survivor has a 34.56% chance of escaping. That includes the Concert Finale in "Dark Carnival", which boasts close to a 50% escape rate (and yes, a fix for everyone's favorite cheese spot is coming). Remove the Concert Finale, and we see the average drop to 29.61%. With these figures in mind, when we make changes, we can measure the difference and see how much the change impacted the balance.
They have also been measuring play modes, and it appears both campaign and versus are the tied for first place (I personally love scavenge).
Last, but certainly not least, they direct attention to CGSociety's interview with Randy Lundeen and Jeremy Bennett concerning technical aspects, level design, Survivor and Infected changes, and differences from the first game.







