sorry for my English, may someone translate into French
Some anticipation for Impetus
1) Army size: there will be a point system and you have to pay also for quality of general. For standard game an Impetus army will be about from 2 to 3 BI armies.
2) Basing. This is going to be much debated among palytesters, but probably Chariots, Elephants & Artillery will be based with full frontage (8cm for 15mm; 12cm for 28mm). This solution can solve some cases in melee and allow people to mount some "bigger" models on standard bases (some chariots models don't fit into 4x4cm!!!).
3) In Impetus troops have one more value that is Discipline and that affects troops on movement, when recoveing from Disorder and in some other circumstances
4) Impetuous troops can go berserk and perform different from BI
5) Troops can be put in Opportunity and react during the enemy phase (opportunity fire, charge...).The game can be more imprevedible.
6) Skirmishers can be dispersed when contacted
7) Some troops can evade
and many other nice things
The rule book will include 30 to 60 standard lists, while more booklets with background on armies, nice pics and more detailed list will follow.