The new program started June 1st, 2015 so you should be using the new books for all but Webelos II's who could continue to use their old book.
Cub Scout Ranks
Cub Scouting went through a transition on June 1st, 2015 to the new program..
Tiger Cubs are now Tigers.
Webelos rank earned as of June 1, 2015, and moving to Arrow of Light rank.
• OPTION 1
Continue using the current handbook and complete the Arrow of Light requirements as stated.
• Either activity pins or adventure pins may be used to satisfy elective requirements.
• OPTION 2.
Begin using the new Webelos Handbook and the Webelos Den Leader Guide for the Arrow of Light
• Must complete the four defined required adventures
• To satisfy the requirement for three electives may utilize EITHER the new adventure electives OR activity badges earned under the current program but NOT USED TO FULFILL WEBELOS RANK REQUIREMENTS
NOTE: Active tenure requirements for Webelos (3 months) and Arrow of Light (6 months) have not changed.