Checked... where? I managed to find links to Repo Man (which was the latest episode).
But, to answer your question, as of right now, the show isn't cancelled. It hasn't been renewed for an eighth season, but the CW says it's relatively safe.
The last episode was Repo Man aired on 17th Feb. After that all the CW shows are having a season break. So after the break ends, the next epi of Supernatural will telecast on 16th March... Till then we've to wait and countdown!! ;)
