Has SP2 been issued by MS yet?

Has Windows XP SP2 been issued yet?
I get on the MS site and I am not sure if I have already
downloaded SP2 or not, nor can i find anything which
says, in effect, "Windows XP SP2 was issued by MS on
(month/day/year)".
Looking forward to some clear, step-by-step instructions
or information for:
1. How to find, on my own pc, if SP2 has already been
downloaded.
2. The date that SP2 was issued by MS, or the anticipated
date when it will be issued.

Looking forward to some help,

Tom-Islander, [one of probably millions of pcs users who
would spend far more money on software if it was simple
to use or if it had three levels of instructions for
loading & use:

Level 1. Total Novice - - Lead Me By The Hand
Level 2. Competent User - - almost able to use current
level of instruction
Level 3. Advanced/Professional - - able to handle any
level or jargon or technical information]