Oh boy. The biggest features of this release is that it gets you ready to upgrade to another version of the operating system. What does it do? Install docking clamps to the warp drive, power up the transporter and set phasers to stun?
Enjoy it folks. There will be no more updates to Snow Leopard except for security updates. This will be the last version of OSX period for some. I certainly see no pending reason to upgrade (at least until software I use/need requires it). Most of the new Lion features are pointless at best (namely all the iOS ones; my desktop is not a giant iPad and shouldn't be treated as one).