Changelog for tk-8.6.8-1.fc30.x86_64.rpm :

* Mon Mar 19 2018 Jaroslav Škarvada - 1:8.6.8-1- New version
* Sun Feb 25 2018 Florian Weimer - 1:8.6.7-3- Late arrival for mass rebuild for Fedora 28
* Thu Aug 31 2017 Igor Gnatenko - 1:8.6.7-2- Rebuilt due to glibc dropping libieee
* Thu Aug 10 2017 Jaroslav Škarvada - 1:8.6.7-1- New version Related: rhbz#1476424