Dpreview has previewed the RICOH GRX

http://www.dpreview.com/news/0911/09111001ricohgxr.asp

And Photographyblog has a size comparison with the Panasonic GF1: http://www.photographyblog.com/news/ricoh_gxr_vs_panasonic_gf1/

Also preorder is available at amazon:Ricoh GRX