What do you know about the ERISA Section 404(c) Plan (in the US)?

[mrsstylz]

According to FindLaw.com

What is ERISA Section 404(c)?
The Employee Retirement Income Security Act of 1974 (ERISA) is a federal law that establishes the standards for private pension plans, such as 401(k)s and 403(b)s.

Section 404(c) is a specific part of this law that permits employees to direct the investment of their own retirement accounts. An employee may want to direct their own retirement account so they can control how much of their savings are being invested into what types of companies. An employee may have financial management experience and believe they can earn more if they self-direct their funds.

Other employees for moral or religious reasons may choose not to invest in certain types of companies, such as animal product or Israeli/Palestinian companies.

I'm thinking this means I can invest in shariah-compliant ETFs and mutual funds. So, that's pretty exciting. Anyone else worked with this? Does it apply to all 401Ks or is this new? I don't recall self-direction being an option a couple years back.