It also comes with an adventure, which I haven't read yet, but I did notice from the map on the back that it uses dungeon tiles (not included) and a double sided poster map (included). I really can't fault WotC for cross marketing their products. There is a reason they made this the essential line.
The monster book itself is a digest sized 360 page book with a good variety of creatures across what seems like all levels, though there is a lot of focus on Heroic to Paragon level with only 17 monsters from level 20-27. Again, this makes sense since most players will be playing in the lower level range in most campaigns.
I haven't had a chance to compare the stats for repeated monsters from MM1, but I have already noticed some minor differences. I like that they have assigned minions to the various roles. There is one thing that MM1 did that I really liked that the MV doesn't do - suggested encounters. MM1 listed creatures not only in the same category (i.e. not just goblins) but a variety of creatures that work well together, and make (mostly) sense that they would be encountered together.
I do find myself worrying about the integrity of the book at the table. The entire Essentials line is digest size, but thick. I bet when they're broken in that they lay on the table really well, but will they hold up to extensive use?