Ubisoft's not just revealing downloadable content delays via Twitter these days - they're also announcing release dates. A new tweet from Ubisoft has revealed the U.S. and European release dates for Tenchu: Shadow Assassins.

"From the original creators of the series, Tenchu: Shadow Assassins sneaks back to the PSP - March (USA) / April (Europe)," Ubisoft tweeted on Monday.

Shadow Assassins is the second in the Tenchu series to be released for the Playstation Portable, the first being Time of the Assassins. Shadow Assassins is the first Tenchu PSP title to ever reach the US, though. It was previously released for the Wii at the beginning of February.