Came across this information, and wanted to know if anyone has gone through this process. Any experiences/ thoughts/updates appreciated.

[also if anyone could find the official version/site for the info. would be helpful..thanks]

If you hold a visa in the E, H, I, L, O, and P visa category, you may apply for visa revalidation in the same visa category without leaving the country. This process is called revalidation, reissuance or renewal of your visa. The revalidation application is sent to the U.S. Department of State’s Visa Office.

To be eligible for visa revalidation, your visa must have less than 60 days of validity, or be expired for less than one year. If you send your visa for revalidation with more than 60 days of validity, or if it has been expired for more than one year, your visa will be returned without revalidation. You must also have the same nationality as when your previous visa was issued.