Cesar "PCDev" Stastny, PC Lead for Black Ops, has posted in the official Call of Duty: Black Ops forums today confirming what is to come on the PC:

We plan to open the game up for modding sometime post-launch. We do not know yet to what extent you will be able to mod the game. There are some purely technical issues related to engine and internal tool enhancements that do not easily fit the modtools paradigm. We have looked at it close enough to see that it is non-trivial and we will have to pick it up again post-launch. Right now we are completely focused on finishing the game.

And, dev console: confirmed.

-pcdev-
This is good news for the PC community in regards to the PC skew of Black Ops, until this point all we knew was that we had dedicated servers of some sort, we now know for certain that we have an in game developer console and some semblance of Mod Tools post release.

Call of Duty: Black Ops - Coming 11.09.10

hell fucking yea!!!!
Nazi zombies
Dedicated servers
modtools
dev console
oh and dont forget KAMIKAZE RC CAR!!!!!