Quote from Of_nihility
Might be flogging the dead horse here with a stupid question. But I need to confirm, you are not going to update a version compatable with 1.5.2 but instead going straight for 1.6.x, I'm assuming that the modpacks waiting for a 1.5.x release will be waiting indefinately then or will the 1.6.x version work for 1.5.x modpacks?
Nothing 1.6.x is going to be backwards compatible with 1.5.x. I feel a bit sad for SMP admins that were still in a holding pattern on 1.4.7 expecting DRPG to eventually be released for 1.5.x. But only a little because the writing was on the wall long ago that it was wise to move on.
I can't even imagine the headache of someone with a 1.4.7 server running DRPG and a few other mods trying to migrate/upgrade to 1.6.x directly while trying to retain their world save.