On July 7 comes a major update for Drupal 7 and a normal one for 8.1

Drupal.org has announced that tomorrow, July 7th, Drupal 7.50 will be released, which is a big jump in the release cycle since we were already at 7.44. The fact that Drupal 7 is jumping so many versions is not a whim, but rather it means a lot of changes and improvements for this version of Drupal and in accordance with the six-month cycle for major changes established by the core team.

There are six important changes to take into account in this new version, for more information you can click on the link for each item:

Other features worth highlighting in this version are:

For more details on the improvements in this version you can see the  CHANGELOG.txt

As for Drupal 8.1, there will also be a set of minor improvements that can be consulted in the  commit log.

Source:  https://groups.drupal.org/node/512445