Presumably you received a Form 1099-S, otherwise the IRS would not have known that you sold your home and you would have gotten no letter. Had you entered the Form 1099-S into TurboTax TurboTax would have prepared Form 8949 to calculate the taxable amount of the home sale with the result passing to Schedule D and the result on Schedule D passing to Form 1040 line 13.
The fact that you bought another home has no bearing on the tax treatment of the sale of your previous home.
