I've booked a flight in May from OSL to ZRH in biz on an E190-E2 operated by Helvetic. When looking at the seat map I noticed that it has a staggered pattern, like this (hopefully the formatting survives):

1A
_2B__2F
3A__3D
_4B__4F
5A__5D

When I google Helvetic biz all the photos are showing a regular 2+2 seat layout, but I can also find some mockups of a staggered seat pattern similar to the one above from around the time the E190-E2 was first unveiled. Is this just Helvetic's way of hiding blocked seats next to biz passengers, or are they pioneering a new cabin layout? If it's the former it's a bit silly as I would have just picked two seats next to each other for me and my wife.