Old Rumor with New Life. This is from the guy who supposedly leaked details of RE:DSC months before Capcom made them official.
Apparently there is a
new RE in the works and it mixes RE4 style 3rd person gameplay and some On-Rails sections. It was supposedly shown at Capcom's Captivate 2010 this week and is expected to be officially announced next week with full reveal at E3 and release at the end of this year, if you go by the
old rumor (which you can find translated
here) and the new comments in that same thread.
This could be Capcom trying to justify their On-Rails RE ventures on the Wii but mixing that with just enough of what we wanted to get us to buy it, yet not actually giving us what we asked for.
Or it could be that a few sections of the game really don't require movement and are played as on-rails, like riding in the back of a moving car or rolling along in a mine cart. It could be the new interactive cut scenes.
Another idea is that it could be like
RE:Dead Aim, where you walked around in Classic RE style and went into Gallery mode when it was time to shoot. So if they mixed that with RE4 gameplay and just used the gallery mode like a looking through the site of the gun sniper type mode, then that could also work.