Yesterdag on october 11th 2017 would have been the date for a key rollover. ICANN, the organisation who controls the root of the DNSSEC trust tree, however postponed this key rollover until further notice. This is because they see that about 5% of all resolvers still use the old key, and doing a rollover breaks DNS resolving.

More information is found here: https://www.icann.org/news/announcement-2017-09-27-en