After the good result obtained with the old version, I'll try to keep the compatibility.
I'm waiting for mod developing. I'll release the modpack since beta, so without the complete modlist, keeping the old config files hoping new mod versions keeps it the same (some mod changed it like treecapitator).
PROJECT SUSPENDED due to news on MC/mods versions. I'll wait for some more news, it is probable that I'll jump directly to 1.6.X