Digital upgrade isn't a pre-order, so no, that won't work for Early Access. If you own a 1.0 service account, you need to pre-order the PS3 version, which will link to your service account. I think you could also pre-order a PC version, but you can't link the registration codes to a previous 1.0 service account, you have to make a new account. The whole thing is incredibly complex and convoluted. SE always does a great job in over-complicating things like this.