Yes, I agree there should be a "Continue to next iteration" option (in the Flow tab) for ease of use.
however as a workaround, add a dummy-task at the end of the loop (as last task of the loop), now at the point where you need to Continue to the next iteration, simply jump to this last task of the loop (using the "Flow" tab), this will allow you to easy skip remaining tasks in the loop and continue to the next iteration.
HTH