The 2 new maps that are coming out already have some Russian servers playing them, if you search for just rush mode or conquest, you can find them.
I just played Laguna Presa Rush mode, the map is immense. It's really good fun.
You start off on a small island as attackers, with a lot of boats to get on to their first 2 objectives, and the 2 are really close together, lots of trees for cover and lots of space to move around.
After those 2 points each side gets 1 tank and it goes into a village type setting with a few buildings around.
On the 3rd stage you'll start to be familiar with the map because it's the base from Laguna Alta conquest mode, the 1 nearest "C" not sure if it's RU or US on conquest, but you basically come into the base the opposite side from when they exit on Conquest.
The next 2 points after that base are located at flag C and between C and A on conquest mode
And the final 2 M-coms are in the other sides base basically on the other side of the conquest mode.
So you have 2 new parts of the map which are the first 4 M-coms, and then the last 6 M-coms is when you start to get the same map as conquest mode. All in all, the map is brilliant, I think I even prefer it to Arica Harbor.
This is going from the small island on a boat to their first 2 Objs:
The second Obj with the buildings:
Then the tank:
Going into that base from behind, the opposite side that the conquest exits:
When the map starts to get familiar: