It says new revolt because in November 2010, revolt was new (released in May-June 2010 on EN Zeta).
Will someone please tell me the difference between revolt and conquest worlds
On revolt you first start a revolt in the enemy village and then after 12 hours send in an attack that can take the village.
On conquest worlds your attack occupies the city and if you are successful you take the village.
More info can be found in the wiki: http://wiki.en.grepolis.com/wiki/Main_Page