First four episodes are out. The actors are pretty damn good as far as their mannerisms and what not with known existing characters.
If you're a real fan of dexter and want to give this a go, start with a season 1 episode of the original dexter series called Popping Cherry before you watch this new show. I think you'll be glad you did.

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"Play until it hurts, then play until it hurts to not play."
http://soundcloud.com/darkside124 HOF 2013, MM Champion 2014