A slightly different kind of notice – Poloniex is going to stop 9 assets only to US customers. There is no Withdrawal deadline (yet), but as of the 29th of May, US customers will not be able to trade them:
On Wednesday, May 29th, at 16:00 UTC, the markets for ARDR, BCN, DCR, GAME, GAS, LSK, NXT, OMNI, and REP will be disabled for Poloniex customers in the US. All assets remain available for trading to customers outside the US.Team Poloniex, May 16
The Article Continues…
We are committed to complying with regulatory requirements in every jurisdiction. Today’s action is a result of regulatory uncertainty in the US market. Specifically, it is not possible to be certain whether US regulators will consider these assets to be securities. We understand how frustrating this choice is for our customers, and for the crypto community more broadly. We believe in the power and potential of these assets, and will continue to focus time and energy on supporting positive policy and regulatory developments for crypto assets in the US and around the world.
US customers holding balances in ARDR, BCN, DCR, GAME, GAS, LSK, NXT, OMNI, and REP on Poloniex must finalize all trades and close any positions in these assets prior to May 29th. Once geofenced, customers will be able to withdraw these assets from their wallet for as long as we support the asset globally. To withdraw your assets, please visit the Balances section of your account.