User blog comment:D2Ranime/New 10th Pretty cure series of Toei Animation Title Called:Doki Doki Pretty cure/@comment-4619970-20121025223324/@comment-4037629-20121027233501

First, it wouldn't be the 10th anniversary if it was released in March 2013. All Stars DX was the 5th anniversary, back in February 2009. Generally, it'd make more sense to celebrate the series anniversary in 5-year intervals (usually known as milestone anniversary), and the All Stars series has generally been released in March each year, ergo technically missing the actual anniversary each year. That said, PC's 10th anniversary is in Feb 2014, not Mar 2013, so releasing All Stars New Stage 2 for March 2013 wouldn't be celebrating a milestone anniversary.

Second, Todo Izumi isn't specifically a "senpai", but is actually more like "senpais"; it's actually a collective name for the Toei Animation staff instead of just one person.