If you wish to be informed about all the news, there are several ways to do so:
Blog - Visit and subscribe to the blog at www.psicorp.us - This is the main source for news, and most frequently updated.
Second Life Group - Join the "PsiCorp Customers" group on Second Life, enrollment is open and free. This will get you news about upcoming releases and major updates
Official Twitter - For the occasional update or support over twitter, follow the Official PsiCorp group: twitter.com/OfficialPsiCorp - this has official information on updates, blogs, events, etc.
Psistorm's Personal Twitter - For a less formal stream of information, follow Psistorm on Twitter: twitter.com/psiwuff - this has less Psicorp news, rather more personal and general stuff.