We are currently in a test phase of the new IV:MP 0.1 functions. Yet we can tell you, that RS2 will have a nice loading screen. A skin selection for newly registered players and possible also duty/skin selection menus for everything where skins needs to be choosen.
We also tested the vehicle indicators already, they are bugged! We hope they be fixed in another Test version so we can make the scripts ready for them. I can already tell you they are useable by pressing Q and E on your keyboard. We recommand that you don't place any important stuff (In Vehicle - Control) on those 2 buttons.
Player Colors? Finally, Cops = Dark Blue, Medics = very Light Blue, Firemans = Dark Red, Taxi Drivers = Yellow, Citizen = Beige
PS: Those informations are not 100%ly means something can still change.
PS2: More informations follow in a few weeks after a Developers meeting!