@All asking about the update:
1.4.7 had sheets of textures that were all loaded into memory whole. 1.5 changed things up, and we had to split hundreds of sprite sheets into many many thousands of individual textures. Now we have most things split and converted, and when the game starts, all these individual textures are stitched together into giant sprite sheets. This means we'll automatically have support for new versions of existing mods, because new textures won't be added to existing sprite sheets. Unfortunately, this took the majority of our time while mods added new content, so we're quite a bit behind. On top of that, I took a break on mods and overhauled vanilla for Minecraft 1.6.
I could release our sum of work on 1.5 now, but I've opted to wait while Drelge, Ventenah, Rashed, Justin_a and others improve our support for BoP, TiC, Dartcraft and Natura. Any and all help would be welcome! When we update, I'll rework the OP too.
For those of you still reading, the mod patcher has all our work for 1.5. Use it now for a pack that supports Unleashed or Unhinged. All I do for a full "release" is use the mod patcher on Soartex.