What is the Best Season for The Problem with Christianity?

About Mark Driscoll’s The Problem with Christianity, Tyndale House said Tuesday:

Finally, while we did delay the publication date of Mark’s latest book, The Problem with Christianity, as we look for the best season in which to publish it, we have not altered our full intention to release it as a Tyndale title. This is a groundbreaking book that we believe will be greatly beneficial to the Church.

According to a March 2013 internal Mars Hill Church document provided to me, The Problem with Christianity was originally slated to be released in February 2014. Apparently, Valentine’s time is not the “best season.”
According to Driscoll, speaking in the November 1, 2013 Christian Post, the book was moved to the fall of 2014.

I will close out the conference with the findings from a massive research project we have undertaken about the most common objections to Christian faith by the unchurched and de-churched ages 18-44 that is the basis for my next book due out next fall that I am currently writing as the follow up to A Call To Resurgence. The tentative working title is My Problem With Christianity. This is the biggest research and writing project I’ve ever been a part of and the findings are surprising and enlightening while also discouraging.

Again, apparently the fall of 2014 is not the “best season.”
To the Christian Post, Driscoll mentions research that is to be the basis of the book. That research was conducted in the Spring of 2013. Given that the surveys were about trends among unchurched people, it seems like it would be good to get the research in front of people while it is still current. However, if this fall is not the “best season” then what season would be best? How much longer should Tyndale wait to bring out research done in the spring of 2013?
The book has been removed from Tyndale’s website after being up for weeks.
Maybe spring of 2015 will be the “best season,” two years after the research was conducted. If Tyndale waits much longer, it will be hard to make a case that the book is “groundbreaking.” Some research is timeless or at least has a longer shelf life, however; it is hard to make a case that trends among the unchurched fall into that category. On reflection, Tyndale’s reason for delaying the book doesn’t seem like much of a reason, certainly not a reason for waiting for another season to pass.