there is also gameplay video of it... ive seen it a few weeks ago. apparently its in the final stages now.... just some tweaking here and there.
as for the fun factor... will said and lives by the motto that he won't release it til its ready. aka, he wont release it unless he is confident about it. we are talking about his ego here... profits are secondary to him at this point.
the only factor that might come into play is that it might not be as fun as we are expecting.