The Wall Street Journal offers new details on music video website Vevo's deal to launch an Apple TV channel, noting that the new channel may launch as soon as this week. Vevo has also struck a deal to bring its content to Samsung televisions, although that launch is likely several weeks away.Vevo, a joint venture between Sony Corp.'s Sony Music Entertainment and Vivendi SA's Universal Music Group, has signed deals to deliver on-demand music videos—plus a new channel of original, 24-hour-a-day programming—via Apple TV set-top boxes and Samsung television sets.