Of course I'm for real :'D They began filming today/yesterday (timezones), and filming one episode. Then Martin & Benedict have a break, because they're both in the Hobbit part 2, and after that filming resumes, sometime near the end of the year. So late this year, or early next year would be when it airs.
Great. Now all we need is a pissed off John and a Sherlock with a black eye, no make it two.... with a bloody nose, that way they are forced to sit down in eachother's company while John is cleaning the mess he made.