As this story clearly is a rumor, and was also quickly dismissed by a spokesperson of the financiers, let's not read too much into it at this time. Production was originally set to begin some time around March or April, and is now delayed until April — but quite officially so, in order to accomodate Kevin Spacey's schedule.
On a positive note, the Hollywood Reporter piece suggests that meanwhile Fincher has signed on to direct the first two episodes of the series. Sounds good!
Here's the news (with thanks to all who sent this in):