Good news: the series has been renewed for a fifth season.
Bad news: the fifth season is going to be the final season.
Deadline brings us the news:
Syfy has renewed flagship drama Warehouse 13 for a fifth season, which will be its last. Production on the final six-episode installment of the series, on which Jack Kenny serves as executive producer/showrunner, will begin in Toronto this summer for a 2014 run. “Warehouse 13 has been an incredible signature series for us,” said Syfy President of Original Content Mark Stern. “We are grateful to the loyal and passionate fan base and know that Jack Kenny, his gifted creative team, and outstanding ensemble cast will give them an amazing finale season."