There are many new fake accounts on twitter. The last months, fake accounts, fake news and spam are growing on the platform because the malicious automated systems out there. Twitter reputation is going down.
All these facts going on in Twitter, make the user experience on twitter worse. The users are complaining about it and Twitter have decided to make some changes to improve the experience on their platform. Twitter is using new measures to make their platform more appealing for their users and to gain their trust back again. As Twitter says on their own blog, there is still so much to do, but they are improving every day. Identifying and preventing all that kind of actions.
Those are the new measures but more will come. Twitter is going to continue improving their measures each and every day, also introducing machine learning technology and third parties to continue combating spam and abusive behaviour on their platform.