For the individual cars, they come in nine different body styles. Two of the cars are heavyweight passenger cars (per usual). The the rest of this month's offerings are freight cars including another pair of Husky Stack well cars (these are apparently selling quite well!). Two of the cars are from collectible series: Ringling Brothers Ad Cars and HJ Heinz reefers.
Runner pack #138 is now available. It is a set of Southern Pacific Ortner rapid discharge hoppers.
Of particular interest is the set of flatcars with Titan Booster loads. These are not your typical flatcar loads.
The containers are 53' Corrugated units decorated for the National Containers line.
Pre-Orders: Runner pack #143 AND 144 were announced for delivery in June 2018 (#143, Weyerhaeuser log cars) and August of 2018 (#144, NS center beam flatcars). They also announced a Rio Grande heavyweight passenger 5-pack.
Here is a link to the Micro-Trains website.