Re: Display latest post from WP
WooHoo! A plugin accomplishing that has been just released:
https://bbpress.org/plugins/topic/wordpress-latest-post/ <— in plugin repository
http://www.atsutane.net/2009/04/wordpress-inside-bbpress-part-1.html <— author’s blog with more info on usage
Tested it and it works well on WP 2.7.1 and bbPress 0.9.4