when i predorderd from the ea store it didnt say anything bout this

When you install or start the game, you will be required to authenticate the copy of the game. That is how you prove that the installation of the game you are running is legit. You can do that in two ways: by putting the original DVD in the drive, or by going online once. If you bought the game on disc, you get to choose; if you have purchased it digitally, your only option is going online. One authentication is valid for 10,000 days. Thus, if you authenticated once on launch day - March 2nd, 2010 – that authentication will be valid until July 18th, 2037.

nope...

i read it on ea forums,...

you have a link cow??

on the ea page i orderd from it still dosnt say anything bout 1942. re read it we are starting off with the lazor pistol tho on limited edition wich is epic. also alternativ fire for armored veicles. and i think that means the rocket launcher on the ambrahams light tank.
in the beta the tank sucks against other tanks but in the full game it has a rocket launcher as u get a taste of if u right click when in it. shows u the targeting system for a split second.

preloading starts on 4/03/2010 btw on the ea store

Steam>EA downloader, plus its £2 cheaper

but did you get 2142 with that?