Like it is said in the update post : The big addition in this update, user-configurable Expansion Drafts, was originally planned for the pre-Christmas update, but it was finished early, so here it is. We'll probably still refine it a bit in that update, tentatively planned the week before Christmas, but getting it done ahead of schedule should let us fit a few more new things into that one.
So maybe it will be preferable to wait until the end of the month before migrating your league. They will still refine it a bit.
|