As far as i know there are around 3 different ways to release the club through the ball (actually im sure there is more im just going by what players on the pga tent to have in their action)
1) the square/flat left wrist release, this is the type of release alot of tour pros would have eg steve stricker, luke donald, althought it does not work for me as i hit way to many blocks out to the right with it.
2) the closed clubface/strong grip release, this release is also used by alot of tour players eg. dustin johnson, ryo ishikawa, charlie hoffman, this is usually a draw swing which most players with very active body movements use this type of release.
3) square to slightly open/ hands roll open on backswing, this type of release is what some players use eg. louis oostazeen (cant spell his name) charl schwartzel and geoff ogilvy also ben hogan. This is also the type of release i like to use, i like the feeling of of my hands crossing over as im hitting through the ball, it feels like its much less easier to block it out to the right and keeps my usually active lower body more quiet.
This is just my opinion on the common releases, I would like to hear you guys opinion on which release is best and why and which one you play with and explain its strengths and weaknesses for you.