This new GPS just came on the market. It seems to lack some of the audio features of the older units, but costs more ($700). One of the big things Garmin is touting is the maintenance log feature in the unit. It also features "Lifetime Maps" thus the "LM" designation. It seems to have the same size screen as the 650-series, but has a more oval case shape.
If anyone has one of these and has an opinion or review, it would be a real service to all of us if he/she could post some impressions.