Can "this" refer to two items?

In our hometown, walk into a supermarket and you are instantly
confronted with a wealth of information and semiotic signals to guide
your decision-making. This will be everything from recognisable brand
names, product aisle descriptions, even simple colours (to signify the
supermarket’s own brand, for example).

I think bolded "this" refers to information and semiotic signal. But then doesn’t it have to be "these" to be correct in grammatically?