...with a new, unsolicited offer of $20 per share...

here's the story from the Las Vegas Review Journal...

Riv cancels vote on sale

Riviera Holdings Corp. has announced it has canceled today's planned shareholders vote on Riv Acquistion Holdings takeover bid because it has received a higher unsolicited offer from a newly formed company. International Gaming & Entertainment is offering $20 per share to acquire the Las Vegas-based company that owns the Riveria and a slot casino in Black Hawk, Colo. Approval of Riv Acquistion's takeover offer was in doubt because several major shareholders were expected to vote against the buyout because they believed the $17 per share offer was too low for the company, especially in light of the rising value of Strip land.