The following is a qoute from Dev Dstahl
"After getting out of a scheduling meeting today I can give a quick update on this.
Klingon PVE episodes have been confirmed to be in the Season Two update plan and the design pod is starting work on the content next week. Season Two is scheduled to be released this summer. It is a decent amount of content so will take some time to make it cool.
I'll be tracking this content as we get closer via the Engineering Report forum. Keep in mind that schedules are always subject to change - but hopefully this will give you an idea."