Hell's Kitchen: Wrapped

We had only one Hell's Kitchen 4 sighting while it taped around Culver City over the last few months, but we're told that the show officially wrapped last week---season 4 and 5 back to back. The FOX publicist wouldn't divulge if any LA contestants are on the show (dammit!), but we do know the fourth season debuts on April 1. Did they tape back to back because Ramsay will be opening his eponymous restaurant at West Hollywood's London Hotel this April? What timing. [~ELA~]