I spoke to a Customer Service Specialist at Apple Corporate who seemed very nice and eager to help answer some questions regarding the 2 MBP's I ordered. (Both with 512GB SSDs)
I asked him if he could ask a Technical Specialist what the model of SSD 512GB drives would be installed in the new MBPs. After about 12 minutes on hold he came back to say that Apple works with quite a few proprietary manufacturers for the drives, but did mention the only specific drive the person he talked to thinks is going in is the Toshiba THNS512GG8BBAA.
I will post pics of one of mine when I receive my systems. I just thought I'd share this info with you folks.
If this is correct then the new 2010 macbook pro's feature the new Toshiba HG2 SSD Drives, which have recieved well reviews and have not had the degraded problem of the previous drives used in the 2009 macbook pro's.
I suggest reading this article if you are at all interested in purchasing the Apple SSD upgrade: http://www.legitreviews.com/article/1230/1/
The article compares many drives to the HG2's, like the Intel G2