I refuse to comment on any possible ironic content in this scheme.
Warner Bros. choice of Bit Torrent is logical, really, as it limits the amount of bandwidth the distributor will have to provide for pushing all those huge files, thus lowering costs and increasing profits.
You are going to hear a LOT more about this on over the months until it's debut late in the summer. Unconfirmed reports place the online ad budget at $40 million (USD) through the end of the year and a larger but unspecified amount for broadcast ads (TV and such) over the same period of time!
I have to wonder if this is a signal Hollywood is finally getting "IT", but somehow that seems too much to hope.