How can I prepare to take the ISTQB® Certified Tester Foundation Level certification exam?

Is the v4.0 ISTQB® Foundation Level simply a concatenation of the former Foundation Level syllabus and the Foundation Level Agile Tester syllabus?

When will the ISTQB® Foundation Level syllabus v4.0 be localized to other languages than English?

Is my existing ISTQB® Certified Tester Foundation Level certificate still valid after the release of the 4.0 version?

What is the benefit of the ISTQB® CTFL 4.0 to developers and other members of a software development team?

Do I need software development skills to take the ISTQB® Certified Tester Foundation Level (CTFL 4.0) exam?