I checked a few of the new 13" MBP's at the Apple Store and they were all using one of two screens:
LP133WX3-TLA1 9C9F (LG-Phillips)
B133EW07 V0 9CA1
Would it be possible use those panels in a UMB? Apple will not replace the screen for a fee and the folks at
http://techrestore.com said you cannot use those panels in the UMB.