Lahiri's newest novel features two brothers born 15 months apart with very different destinies. Udayan is an activist committed to fighting poverty in Calcutta. Subhash chooses an academic life and moves to the US. When Udayan dies, Subhash returns to India and tries to pick up the pieces of his brother's life.
This novel spans generations, and is different enough from Lahiri's other books but thoughtful and beautiful enough to be similar.
Personally, I didn't enjoy The Lowland as much as The Namesake or Unaccustomed Earth, but I'll read anything that Lahiri writes.