SEGA Amusement UK's arcade title is not called Sidearm but....

[loempiavreter]

...Dream Raiders

http://arcadeheroes.com/2012/09/29/sega-unveils-dream-raiders/

Inception inspired turret shooter... 
Like the facebook page, with 100 likes they will post a video:
https://www.facebook.com/dreamraidersarcade

Dunno what to think it looks, ok... definately not as rad as Dark Escape 4D unfortunately. And I hated Inception as well.

[Centrale]

I "liked" it because I want to see it in motion.  But do I have any realistic hope of ever playing it?  Not really...  The cabinet looks cool though.