'Top Chef Las Vegas' winner Michael Voltaggio got himself into hot water today when he tweeted that 'Top Chef All-Stars' "is for people that didn't win."

E! Online reports that the offending tweet resulted from several of his followers asking why he wasn't competing on the new edition of the show, which debuted last night.

A minor Twitter war ensued, with Voltaggio spending several more tweets backtracking and complimenting the talents of the all-star lineup.

In other TV news ...

• 'Dexter' is about to get renewed for a sixth season. According to reports, Showtime is expected to make an official announcement within the next week. [The Hollywood Reporter]

• Forget Twitter sitcoms -- the newest internet-to-TV trend is ... smartphone app to TV? The founders of Foursquare have signed a deal to integrate their social networking app into a new show. [NY Mag]

• 'Bones' star Emily Deschanel is postponing her directorial debut until later in the season. Her part was reduced to lessen her workload during the episode she was scheduled to direct, but Fox producers want to take advantage of the show's prime post-'American Idol' spot and showcase their lead actress. Her part was beefed back up and the directing postponed. [TV Guide]

• Another Palin could possibly compete on the next season of 'Dancing With the Stars' -- and it still won't be Sarah. Apparently producers are now courting Todd Palin, Sarah's husband. [E! Online]

• IFC announced it has picked up another slate of canceled-too-soon programs. 'The Ben Stiller Show,' 'The Larry Sanders Show' and 'Mr. Show' will air on certain weeknights beginning in January, while 'Action' will debut in late 2011. [The Hollywood Reporter]

• AMC announced that production on its newest series, 'The Killing,' began Thursday. The show, about the investigation into the murder of a 13-year-old Seattle girl, stars Mireille Enos as the lead detective. [TV Guide]