Drupal 7.50 released | Drupal.org
Yes, there is a version jump compared to the previous 7.44 release; this is to indicate that this Drupal 7 point release is a bit larger than past ones and makes a few more changes and new features available than normal.
Updating your existing Drupal 7 sites is recommended. Backwards compatibility is still being maintained, although read on to find out about a couple of changes that might need your attention during the update.