Yes, it looks like Linden Labs is phasing out the community forums in favor of blogs and in-world forms of communication. This has, of course, started an outcry from some residents, while others are praising the decision.
Personally, I think this could be a good thing if newer forms of communication make it easier for residents. Discussion boards are one of the first community driven communications mediums used widely on the Web. With Web 2.0 sites pushing the envelope on social networking and communication, I think it may be time to update and move into the new century for many sites.
Second Life has a huge social aspect to it, and using a dated out-of-game discussion platform feels a bit odd to me. Let's hope newer and more interactive forms of discussion are in the works!
P.S. I think there is still a place for discussion forums, but more along the 3rd party route. Fan sites, help sites, group sites, etc, are the perfect place for niche discussions. Just sayin'.