At the beginning of this year, we reported that Google was testing hotel price trends in the form of graphs. Well, it looks like Google has begun rolling it out this week.
If you search for hotels on mobile, you may see this pricing trends graph that lets you plot by week or month view. Here is a GIF of it in action:
Sergey Alakov said on Twitter that he believes it is rolling out and I do agree, it does look like it is rolling out now.
This will show you a graphical view of the hotel prices, as they increase or decrease so you can plan your vacation that way.
Forum discussion at Twitter.