Every time I saw a team formation in this forum, players often said "+x map roll". I know themed team bonus are all of who will be the first player:

THEMED TEAM BENEFITS
Players using a themed team receive a number of benefits:
When rolling to establish who will choose to be the first player, the player using a themed team gets a +1 bonus to the roll for each character (excluding bystander tokens) on that player’s force.
The player of a themed team may choose one target battlefield condition to be canceled including his or her own. This choice is made when battlefield conditions are revealed.
Any character on a themed team can use Probability Control. This use of Probability Control does not count towards any other game effects that reference the use of Probability Control (such as meeting prerequisites for feats). If the shared keyword is a generic keyword, the team can use this once per game for each 300 points (or fraction thereof) of the game’s build total. If the shared keyword is a named keyword, the team can use this two times per game for each 300 points (or fraction thereof).

I'm confused, where's the question?

You are right!
Themed team give bonus map roll or not?

page 4 in the new 2012 rule book:

STEP 1: REVEAL FORCES AND ESTABLISH THE FIRST PLAYER
All players reveal their completed forces. Then, each player rolls 2d6 (reroll ties). The player with the highest total result gets to choose who will be the first player. When playing with more than 2 players, the player with the next highest total gets to choose who will be the second player, and so on.
Each player turns the combat dial of each of his or her characters to the starting position. The starting position has a click number marked “1” and/or is the click to the right of the green line.
Once a character’s combat dial has been turned to its starting position, players can turn the dial only when directed to do so by a game effect, such as taking damage or healing.

the bolded should cover where the theme team bonus comes in handy.

page 5 in the new 2012 rule book:

STEP 2: CHOOSE MAP AND
STARTING AREAS
The first player chooses the map where the
game will occur. After the first player chooses
the map, the player to his or her left chooses the
starting area—an area of squares inside a purple
boundary line—where he or she will set up his
or her force. If there are more than two players,
continue clockwise around the table until everyone
has chosen a different starting area. In two-player
games, the chosen starting areas must always
be on opposite sides of the map. If either player’s
force will not fit within the purple lines, all starting
areas increase by one row and one column but
cannot overlap another player’s starting area.
Starting areas can be extended until each player’s
force will fit in their respective starting area.

the bolded should answer ur question.

Very very thanks!!