My husband is a naturalized citizen. He filed an I-130 petition for his brother. We have received an approval notice and understand there is a visa petition still has to be done to make it all final. Will my brother-in-law be able to bring his wife and daughter with him? Or will he have to come first and petition on their behalf? Where can we look to find out how long the visas are taking to be assigned/approved for specific countries/regions?
In your husband's case, your brother in law will be able to bring his wife and children without making a separate application. Follow the dates in the Visa Bulletin. The date of the I-130 filing (not approval) with be his "Priority Date."