Responses above me are good. You do have to be careful about asking questions that mods feel are asked too often. Craftbukkit may not be released for quite a while for 1.2.
I also wanted to add that in the Technic SSP forum, there 's a post that is updated daily with the status of Technic pack mods and 1.2.4:
http://forums.technicpack.net/index.php/topic,3015.0.html
As you can see, with the exception of Crafting Table II, I believe that all the Tekkit mods are up to at least 1.2.3, for single player. I'm pretty sure the multiplayer for those all require bukkit, though, so I do not think any are available for multiplayer. As someone said in that thread, there are a huge number of bugs in 1.2.x related to Anvil, so it is possible that it may be skipped altogether for the Technic pack. I would assume the same could be said for Tekkit.
I, also, am very excited about 1.2, but it's clearly way too early to be asking about a Tekkit release for it. You have as much information as anyone here about when bukkit may be available for 1.2, and it's really the bottleneck for everything.