-One Piece was considered heavily in the realization of Go-Kaiger. The toys have been being planned for about a year.
-The Action Figures of past sentai are able to be inserted into the belt. Right now it would seem they either allow the rangers to transform into past senshi as previsouly rumored, transport to other worlds, or possibly both. The action figures are supposed to come in capsules, and the belt buckles open in a way similar to Shinkenger's. Thanks to cowspot, it would seem the action figures may actually be keys.
-The suit design has an "orthodox visor-mask".
-The team's pirate emblem bears a striking resemblence to the Crossbone Vanguard of Crossbone Gundam
-Robo Design has some Go-on and Gosei influence
-The first 2 episodes of the series will feature the appearence of all Sentai fleets
-They will appear in the Winter VS movie
-Robo has a similar sillouhette to GoseiGround, and seems to have dark coloring.
The following was just posted on yahoo.jp, by a poster:
"I'm a person involved in Tokusatsu. The following is Cho-Netabare (Super Spoiler) so only read on if you want to be spoiled:
Next year, Sentai will join the route that Rider and Ultra have set upon.
The title of the new series is Kaizoku Sentai Go-kaiger, but that may be changed in the future. The series involves 5 senshi who wonder the sea of time-space in their changeable Combat Mothership. They have encounters/fight with heroes in the worlds of past sentai.
Finally, the world of Himitsu Sentai Goranger is scheduled to appear. Offers have already gone out for past actors to come back and reprise their roles. Miyauchi Hiroshi/Aoranger (and Kamen Rider V3!) and others are listed as part of the guest cast that will definately return.
Rival Characters are scheduled to appear as well, and one such character will be BioHunter Silva, who will appear in the Bioman episodes.