For those interested, Amphibico has announced a underwater housing
for the Z7... should be available in July ...

Full functions with 3 different port options

keep us posted. add pics / links when / if you can

This is all I could find... even the Amphibico site is not showing the press release yet...

http://wetpixel.com/i.php/full/amphibico-announces-phenom-z7le-housing-for-sony-hvr-z7u/