Just as the FZ10 is the (partial) successor of the FZ1/2, the FZ10 itself has been superceded. In August 2004, three new models have been announced (FZ3/15/20). The FZ20 has been previewed at dpreview, reviewed at Digital Camera Resource, reviewed at Steve's Digicam and reviewd at Imaging-Resource. In July 2005, the FZ30 was announced.
DPReview FZ20 announcement-- specifications. The FZ20 also has a larger electronic viewfinder display than the FZ10.
Panasonic manual for the FZ3 -- both this link and the one below for the FZ20 discovered by `Gospel' and made known on the dpreview forum, months before the FZ3 and FZ20 were released!
Panasonic manual for the FZ20
DCresource FZ30 review
Steve's digicam FZ30 review