Today the KHL entry draft took place. The rules of the KHL draft could be found here http://en.khl.ru/news/2009/6/1/13673.html
The list of drafted players http://en.khl.ru/news/2009/6/1/13671.html
Viktor Hedman was drafted # 83 overall (of 91 picks) by the Spartak Moscow. So, if Hedman decide to play in KHL he could sign only with Spartak untill he turn 28 (if his right wouldn't be traded). Taking into account that Spartak is one of the poorest KHL clubs, I doubt that it could happen.
John Tavares went undrafted.
It was reported today by gazeta.ru that Ak Bars signed ex-Flyers goaltender Robert Esche. It said that Esche will replace Lightning prospect Vasily Koshechkin, whose contract is likely to bought out by the club.
Gazeta.ru is referred to Ak Bars press-cutting service, but this internet media is known for frequently reporting unproven rumors, so it is early to say that Koshechkin will leave Ak Bars for sure.
UPDATE: (May 30) In the Russian newspaper, "Soviet Sport," another version of why Koshechkin's contract with the Lightning is unsigned was published.
It is rumored that Koshechkin wants to test himself at the training camp and sign the contract only after the camp if he will see by the results of the camp "enough possibilities for the career growth." As it was reported he wants to go to the camp without a contract with any team and after the camp he plans to sign a contract with Tampa or CSKA.
Anyway, those reports, no matter what is the truth if there is a truth in both newspaper notes, say that Koshechkin plans to try himself at least at the Lightning camp.