In case you've missed the blogs, tweets, and other general chatter, Railo 3.1 (open source) is released to the public. Check it out at getrailo.org/.
Also, in a dubious April 1st post Mark Drew has joined the team at their UK office in London as CEO!! (Congrats Mark!!)
Also the Railo Blog has a post linking to Installation guides. Obviously I haven't checked them all but Luis Majano's (of ColdBox) does have an excellent Railo (Resin) Apache and Mac OS X guide