Here are the official pics of SH Figuarts forthcoming Kamen Rider Den-O Liner Form.
For me, Den-O was a bit hit and miss as a Rider Series. I loved the designs and over-all concept of the series, but I was not a fan of the idea of the main character (Ryotaro) being "possessed" by the slap-stick Imagin (beings from an alretnate future that are trying to change the past) and being resistant to the idea of being a Rider through out the series.
Liner Form this was the only Den-O form where Ryotaro was actually in control. In this form, the different Imagin instead formed his weapon-- the DenRider Sword-- instead of possessing him and giving him their individual attributes.
I like the look of this form, too. It's not as over the top as the Climax forms and has a nice balance in its design.