The BigAdmin Newsletter came out last week. Subscribing to that is another good way to get information about Solaris. Here is a list of the Solaris-related information in this month's Newsletter:
Project Brussels: A Uniform Interface to Administer NICs
Need to Run Different Solaris Versions on One Machine?
Diskless Setup for the Solaris OS on x86 Platforms
Q&A on the new Solaris 8 Migration Assistant
FAQ: Solaris OS on IBM Servers
Plus a couple of goodies on Solaris ZFS:
Sun's ZFS is Close to Perfect, but Widely Misunderstood
A Conversation with Jeff Bonwick and Bill Moore: The Future of File Systems