This is now posted on this site as an article, but there is nothing on the NFHS site as of yet backing it up.
http://basketball.officiating.com/x/article/5800
Changes are:
1) Bottom spaces left open on free throws.
2) Technical foul charged directly to head coach for illegal shirts, numbers, instead of to the player. The article doesn't state whether there would be one "T" maximum or one for each violation.
3) usual crap about headbands.