This document Seems to suggest there will soon be extremely proscriptive rules for hiking in Red Rock. This version of the document was released just today. At first is seems to apply only to commercial interests, but language has been slipped in to restrict not-for-profit "organized groups." BLM has actually removed some of the definitions (e.g. part of the definition for "organized groups") in the past few days. Currently, no more than 50 people per day could start at all of the RR trailheads combined, if they are "organized," and special permits are supposed to take at least 180 days to process (that figure is from another document). However, unorganized groups of people would not be regulated. Ironically, the "unorganized groups" are responsible for the vast amount of dog poop, other litter, and vandalism.
This is a very confusing document. There will be a meeting at the RRCNCA Visitors' Center Feb 23, from noon-8PM, with presentations at 2PM and 6PM, supposedly to clarify. If you tell the folks at the toll booth that you are going to the meeting, they won't charge the entry fee.
In hundreds and hundreds of trips in the Red Rock backcountry, I have never seen a single BLM representative. On most trips, I see no other groups at all, once I am a few minutes away from the trailheads. I surmise that the people who wrote this document are working in a vacuum, with little knowledge of what they intend to regulate.