I didn't see it posted earlier, but if anyone wants a general idea of how the Lupin series might look in motion, here's a "sneak peek":
http://youtu.be/8XjdaNb-2_M
In actuality, this is a trailer of a Pachi-Slot machine by Heiwa released late last year. It was also Fujiko-centric ("Fujiko: 10-Billion-Dollar Goddess") and featured character designs by Takeshi Koike, also the character designer for the upcoming TV Series. I've long speculated that it was going to be a tie-in with the TV series, but the series was delayed several times from its initial announcement for Fall 2011, and I imagine Heiwa just got impatient and wanted to launch.
This user also has several chunks of off-screen footage from the final game:
http://youtu.be/4VpWVWFrvoM
http://youtu.be/kLFeqnaNVVs
http://youtu.be/F6_o_WHUWzA
There's a sequence in the first chapter using Seamo's "Lupin the Fire" that feels like it would make a good OP, but I think it's unlikely to be from the Series: http://youtu.be/4VpWVWFrvoM?t=1m52s
Hmmm. might watch this.