Just please give us gamers a definitive date. I thought the near 7 weeks it took for Fallout 3 to get the GECK out was a bit long. Oblivion only took about two weeks for its tool set to be released. I have no clue if Steam is the reason if going by the mention by Gstaff, that mods will still be able to be created and shared for free. MY fear is regarding the Steam comment is that the kit may be reduced to what can be created/modded as to not hinder sales of DLC on Steam for PC. Bioware omitted releasing a toolset for Dragon Age 2 on PC, though they would never say if they would or not, The toolset for Origins was incredible.
Giving a specific date at this point would probably be a way for them to shoot themselves in the foot in terms of PR. Why? The date will either be too far in the future or it will slip. They seem to be putting a bigger effort than usual into releasing a quality tool -- even going so far as to have a closed beta with a group of skilled modders. My thinking is they found an issue that's stopping them from releasing it and they're trying to fix it robustly before they dare release anything.
The thing about software projects is they are hard. If you're not doing something very conservative the dates either slip or the product ships full of bugs. This happens 99% of the time. Software that meets the date is almost always full of bugs (eg. every one of Bethesda's games). The smaller bugs won't stop a release, so they're probably fixing something important.
I wouldn't worry about them crippling the tools: that gives them no advantage because there already isn't much skilled modders can't do. If they cripple the CK then tools like SkyEdit will fill the gap as quickly as possible. That's exactly what happened when they were unable to release GUI tools. If there's anything that impedes the sales of their DLC it will be the quality or price of the DLC.