I can't say anything definitive on this because I do not work for Google and have absolutely no knowledge on what is truly going to happen. I do have an opinion though.
There are rumors that Chrome OS will be merged in some way with Android. Now that is a distinct possibility, but I am not sure it will happen. Chromebooks have not taken off as a consumer device. They are not the hottest thing on the market and the fact is, they do not pose much of a threat to Windows machines or Macs. They do have a small market share, and that is nice, but I do not think it will expand that much in the future. That is just reality.
But there is one market where Chromebooks are doing very well, which is in the K-12 education market. More and more K-12 schools are adopting Chromebooks, and sales are growing. There are several reason for this. First, Chromebooks are inexpensive to buy and inexpensive to use. Second, software is all web based and inexpensive to use. Because Chromebooks are web based, they are easier to control from an administrative point of view, especially at the school site. I think this is the most important reason why Chromebooks are making nice inroads in the education market.
Smartphones are the new curse of education. Why? Because they are cool and you can do some really fun things with them. You can text, surf the internet, and you can especially download play many of the most popular games on them. How can any teacher compete with that? Now, schools are doing their best to overcome the distraction, but if you give a kid a device that can do all the cool things smartphones can, they will immediately load them with games and all the other things that they love to do. Then you will not only have to deal with the curse of the smartphone, you have to deal with the curse of the device provided by the school itself! At least with Chromebooks, there are fewer distraction wile still being a functional computing device.
So, because of the education market, I think Chrome OS and Chromebooks have a good future. Since I like using my Chromebook, that is good news for me.
What do you think?