GM has released a single teaser image with their upcoming 2012 Buick Verano. The North American manufacturer has also stated that the 2012 Buick Verano will get built at the company’s Orio Assemble Center in Michigan, and that the new compact sedan will hit the market towards the end of 2011.
The 2012 Buick Verano is basically the US version of the 2011 Buick Excelle GT model sold in China, and at this point there are not details available on what kind on engines will be fitted under the hood.
Mark Reuss, N.A. President of GM said that the "Verano will bring premium styling, performance and content to Buick
buyers wanting a smaller car than Regal," while "The investment in
Orion Assembly also extends GM’s local small car footprint, again
increasing the number of U.S.-made small vehicles available in
showrooms."
Stay tuned fore more details with the 2012 Buick Verano as soon as GM will make them available.
GM press release :
Lake Orion, Mich. – General Motors will invest $145 million at the Orion Assembly Center, GM North American President Mark Reuss said today. Orion will be the home to Chevrolet’s new small car and Buick’s future compact sedan – the all-new Verano. 
"Verano will bring premium styling, performance and content to Buick buyers wanting a smaller car than Regal," said Reuss. "The investment in Orion Assembly also extends GM’s local small car footprint, again increasing the number of U.S.-made small vehicles available in showrooms."
The investment to retool the facility will retain 1,550 hourly and salaried jobs at Orion, along with 120 jobs at Pontiac Metal Center. In June 2009, GM announced that Orion would build the next-generation of Chevrolet’s new small car. The total investment for that program is approximately $600 million, which includes the Verano.
GM has worked closely with the United Auto Workers to create new and innovative contractual language that will allow this facility to be flexible and lean – essential elements in the highly competitive, small car market segment.
“The UAW welcomes the news of an additional vehicle being allocated to the Orion Assembly Plant. Building small cars in the United States is very important to the UAW, Oakland County, and the State of Michigan,” said Joe Ashton, UAW vice president of the GM Department.
“Given the opportunity, our members can use their expertise and experience to build high-quality, affordable vehicles for American consumers. I would like to extend my congratulations to the members of UAW Locals 653 and 5960 for all their hard work to make this important project a successful one.”
Verano adds a premium compact entry into the market, expanding the portfolio of what is currently the fastest-growing mainstream brand in the United States.
Orion Assembly is in the process of retooling the plant, which last built GM midsize sedans, for future small cars. The improvements are expected to be finished by summer 2011.
Over its more than 27-year history, the Orion plant team members have built more than 4 million cars for GM, while setting an industry record of 10 million man hours of continuous operation without a work day lost to injury. The plant also was the first GM facility to receive the Clean Corporate Citizen designation by the State of Michigan.
No further details on production or timing for the Verano and Chevrolet’s new small car are available at this time. 

Source: Buick