It's the latter that's correct. The Ruger No. 1 rifles, which are prohibited now because they fall within paragraph 95 of the existing regulations, are prohibited if, and only if, they are chambered for a calibre that produces muzzle energies in excess of 10,000 joules. Other Ruger No. 1 rifles, which are chambered for different calibres that do not produce that level of energy, will remain in the existing category, which, broadly speaking, is non-restricted.
On December 6th, 2022. See this statement in context.