Apache TIKA 1.7 was released: https://dist.apache.org/repos/dist/release/tika/CHANGES-1.7.txt
This is more or less a dependency update, so replacements. Not sure if we should do this for 5.0. In 5.0 we currently have the previous version, which was not yet released with Solr. If we now bring this into 5.0, we wouldn't have a new release 2 times. I can change the stuff this evening and let it bake in 5.x, so maybe we backport this.