STEAM FINAL FAQ, put together by Xpertgamer
taken from #steam on gamesnet

1) Yes, 1.6 is going final with this
2) Yes, you have to register again.  If you use the same email address, your friends list will come over though
3) Yes, if you have the beta client, it will update automatically.  Once it updates to steam final, you can then register using the update.
4) Steamid's are first come first serve basis
5) We do not know the time the client will come out, please be patient.  We will post in channel when client is released.  Pacific time is GMT-7 and CET-8. (normally gmt-8 but Daylight savings time)
6) You will need a valid Halflife or CS Retail key to use steam
7) WON will be up for 2 more weeks.  1.5 will be playable until WON is gone.
8) Steam does not work on LAN only servers.  Offline mode is coming
9) HLDS is for Dedicated servers only.  NOT clients.  Servers will NOT get steamids and do NOT need cd-keys
10) Mods and items like hlsw are supposed to work with 1.6
11) league questions need to be directed to the leagues themselves
12) New clients will be available off of steampowered.com and mirrors shortly thereafter.  Remember, its just an installer.  
13) There will not be patches like before.  Steam will download the required content automatically.
14) Keep your 1.5 install in place.  Steam will use it so it won't download as much for 1.6.  We do not know if 1.5 will be deleted or not.
15) You register using the steam FINAL installer.  You can NOT use the beta client to register for a STEAMID

WARNING dont give your cdkey out to anyone and have them sign up for you unless you personally know and trust them.

idle #clan-xenocide please k thx