it sounds like you're frequently visiting BP so why not just head in the office and ask the sales people? its not like its some great big secret and I suspect other buyers are being updated/informed on this too.
anyways long story short they seem to have ran into an issue with the framing contractors and so it just sat in that phase forever, essentially delaying all phase 1-2 homes while others are built up around them.
the other ellwood buyer already chimed in on his estimated closing date change.. ours is delayed by an additional month too. i hadn't thought too much about it as i took the initial estimate with a grain of salt given it was too optimistic, and we're fortunate to not be impacted as we're flexible.
it sounds like only 1-2 buyers are in a pickle which is unfortunate/unacceptable - basically one buyer is ready to move in a month ago but they're now stuck. the whole thing seems serious enough that they'll invite buyers out to a meeting to discuss time horizon and other details, so I suspect they'll address other concerns there (and hopefully make good somehow to those heavily impacted).