Board Thread:General Discussion/@comment-96.240.181.252-20130318181622/@comment-13413401-20140120193941

After the Minecraft 1.6 update with the new launcher, the entire code for making mods has changed. Because of this, pretty much all the mods were stuck at 1.5.2 for a few months. In fact, most mods only started being updated a month ago to 1.7.2 (months after the new launcher came out). Becuase of this, the technic's mod packs haven't been being updates either.

However, tekkit lite will never be updated again. I read that they are not planning on going back to using IC2 in Tekkit either.