UPDATE: Sigi Schmid confirmed that the point of having the game on Monday was to play on a "clean field."
With a Seahawks match on November 9th the Seattle Sounders FC and MLS decided to avoid the football lines of last year and moved the first home playoff date off of the weekend to Monday night on November 10th. The date change will mean an extra day or two of rest for the opponent (still to be determined, it just won't be the Galaxy), but will not effect the Conference Final round as the league is taking the weekend of the 15th and 16th off due to an international break. The time and network televising the match was not announced.
This change means that the grounds crew will have about 24 hours to remove all of the NFL lines and paint the Field Turf for the MLS Cup Playoffs. That is a rapid turnaround, but one that they should be able to handle. It is notable that there is no promise of the absence of NFL markings in the press release, but the impetus of the move is understood to be an avoidance of the eye sore that happened last year.
Being on a Monday night means that some people who purchased their tickets may not be able to attend, because November 11th is a work day. I strongly recommend that you take Veterans Day off so that you can honor Veterans and go to the Sounders game.
Season ticket holders are still able to reserve their seats. Tickets go on sale to the general public on October 21st.