Quote: So don't take anyone's word for granted.
'
You're Not The Only One'

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What has to be expected for a higher-end APS-C model?
A sensor with more megapixels (see Nikon D7100), probably a newer 24MP version from Sony.
What do the yet announced new products tell us?
The new flash units offer a constant light source for videos.
This points towards extended video capabilities and an articulating screen.
The 645DII also is overdue.
The 40MP sensor could have already been replaced by a 50MP version:
KAF-40000 - TRUESENSE 6.0-micron Full Frame CCD Platform - Technologies - Products - Full Frame CCD KAF-50100 - TRUESENSE 6.0-micron Full Frame CCD Platform - Technologies - Products - Full Frame CCD
Maybe they have even a better solution now.
What about the omnidirectional camera?
There are also diffident rumors about another mirrorless.
You may not eliminate the possible to see the truth

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I would be surprised if we would not see at least one new camera from Ricoh at IFA...
*Building-up artificial tension and suspense*