Seems KoyaShige discussed the details of the contents of the dvd on K-chan NEWS this week.
This week's raw audio of K-chan NEWS can be found here and the dvd discussion is about about 5:35 after Koi no ABO.
I also saw this report:
Anyone who can translate would be very welcome but a rough google says that it included the surprise birthday party for Ryo and Tegoshi, exchange of Christmas presents and more of the bathing previously reported.
Thanks to loveandcoffee for this rundown:
The dvd is a recording of their final performance in Kyocera Dome (Osaka) on Jan.12, and there's a tour documentary as well. Keichan said that the documentary has a lot of stuff, and that he recorded it himself, having the camera on all the time. It includes Ryo and Tegoshi's surprise birthday party(-ies?), Xmas presents exchange, bathing scenes and more.
There's also individual solo PVs for each member. Koyama told the director he wanted to do "Love addiction" in a cool and sexy way, so the PV is K-poppish.
On the other hand, in Shige's "Shalala tambourine" he challenged 7 different cosplays, including a schoolgirl, a sexy girl and a death metal fan. (XDDD) he said that since everyone was going to have "cool" PVs, he wanted to go for the lolz. XD
They didn't talk much about other members' PVs. Ryo's is "Code", Yamapi's is "Mola", Tegoshi's "Ai nante" and Massu's is "Superman". Apparently Massu is very impressed with his own transformation into Superman, which appears in the PV and bragged about it to Keichan.