A hardfork for that questionable coin is coming to introduce stealth addresses or at least so they say . The code is closed source and no real measures appear to be in place to avoid multiple chains forking. A second blockchain appeared already.
So what will happen? At a hardfork as this one (remember the ones with BCH and BCG), all coins will automatically double. You will keep Onions on the old blockchain, and receive the same amount on the new one.
How exchanges, and there are not many, will react, we do not know yet. I strongly recommend against upgrading the wallet before the fork at block 460000 that should occur beginning of April, or you will likely lose all your (double) coins on the old chain.
I do not hold DO, so consider this a general remark for hardforks.