We have already said that we will hardfork multiple times and made a warning for all the users to stay up to date.

The next update will likely be the last mandatory hardfork, we will introduce a reduced blockchain and apply some amorphous computing concepts that we have been working on very hard, topology-aware clients are the future of decentralized monetary systems and will lead to much faster propagation of information and generally significantly reduced dis-synchronization of the network.

If your client isn't getting past a certain block delete the whole chain and let the client redownload it. All the whales haven't yet switched so this is a golden opportunity to mine yourself some NUD blocks on an extremely low difficulty.