I am all for it but won't believe it till I see it. Just posted this in another thread but very relevant to your post. Lowrance Side Imaging: Sonar/GPS Installation & Operation: BBC Boards
If it is true, hard to figure out why they haven't advertised it. But then look at HB...do you even see a 798 si advertised on their website? Guess they are trying to dump old stock. Lowrance on the other hand is really up front as to their product line on their website. In the end, its all about $'s and cents.