So Lion will offer whole-disk-encryption through filevault. That will be a welcome addition for many. However, based on some screenshots, it seems like there is no additional option to do home-folder-only encryption (i.e. carry on with the current implementation). I would be disappointed if this were the case. I like home-folder encryption because it means I can give my computer to guests to use (via the guest account) without having to give them a password which effectively opens up access to the disk. So I'd be very interested to know how multi-user scenarios and guest accounts are being handled in Lion when the new filevault is enabled.