Won't be too long.  I mentioned earlier I'm rolling in a patch to help with the orphan problem some cravers have experienced.  So this update will be a protocol switch like a hardfork, which means everyone will have to update their wallets by a certain point in time.  I was going to make that 2 weeks, but with the orphan patch I'm making it 4 days / by Monday in case exchange people or others aren't around over the weekend.