Known for many years as the Rico Reserve Classic the new branding and packaging from 2016 onwards reflects the D Addario company ownership (that has actually been in place since 2004) and the reeds are now referred to as Reserve Classic, or D Addario Reserve Classic.
The reeds are exactly the same, with the same geometry, manufacturing process, manufacturing location and indeed the same cane sourcing, it's only the packaging that has changed.
The Reserve Classic reeds are a thick blank clarinet reed that offers tonal depth, a longer vamp for flexibility, squared tip corners for ease of response, and a thicker tip for clear articulation.