Elites and Elite+s still get 1 additional bag compared to what is stated on the ticket, nothing has changed in that regard.
On the pages with 'short' descriptions of Gold, Platinum, only Platinum mentions the extra luggage allowance, but if you visit the traditional long table comparing benefits of all levels then only Explorer doesn't have the extra bag. The fact that the page states Explorer and not Ivory indicates it's been updated and applies to the new system.