Capcom has registered the domains for onimusha4.com, residentevil5.com, and viewtifuljoe3.com out of their Sunnyvale, California office.
This does not confirm that sequels to these games are currently in the works; however it is always nice to see that Capcom is actively securing domain names and trademarks for titles that may be coming at some point in the near future!
More as it comes!
Source: GCA