Neowin has posted to its site a copy of the full Windows XP Service Pack 2 beta invitation. The invitation says testers should expect to receive the code sometime in the next few weeks. A number of the new features due in SP2 are known already: popup ad blocker; Internet Connection Firewall turned on by default; Messenger Service turned off by default; improved memory protection, etc. Although called a Service Pack, the update — due out by mid-2004 (we're guessing Q3) — is more like a whole new version. (Just for the record, the versions of SP2 that leaked earlier this year are now null and void. Microsoft is starting the beta count all over.)