Whilst I do not have a PC setup that can test the RealSense SDK For Linux, my research did find the installation instruction for installing modules. The features that you are looking for are only present in the RealSense SDK For Linux for the ZR300 camera only, and are not in the legacy Librealsense. RealSense SDK For Linux installs Librealsense as one of its modules, and adds a lot of other features such as person and object libraries that are not in the basic Librealsense.
Here is the list of RealSense SDK For Linux module names.
In the installation instructions, it shows that you should list the names of all the individual modules that you wish to install in a single long line with a space and no comma separating each filename. For example,
sudo apt install librealsense-object-recognition-dev librealsense-persontracking-dev librealsense-slam-dev
Have you done such an instruction and found that the packages do not install?
Before installing these optional packages though, the SDK and samples should first be installed with:
$ sudo apt install librealsense-samples beignet-opencl-icd
The full instructions are on the SDK's 'Getting Started' page.
In regard to your other question about where RealSense is going ... the F200, R200, SR300 and ZR300 models are now classed as being 'end of life' (i.e retired). Support is still provided for them on this forum where possible, but updates for them are no longer developed, with the sole focus being on D415 / D435 cameras and RealSense SDK 2.0.
With the D415 and D435 cameras, Intel are following an open-source development model, encouraging developers and companies to develop third-party applications for D415 and D435. Examples include the face software CloudCompare and the skeletal tracking software Nuitrack.
It is planned that another generation of RealSense cameras will be released around the year 2020, so you can have confidence in future support and easy transition to the new generation by purchasing a 400 Series camera.
Thanks for your help. Yes those are the instructions I was following and none of those packages can be located when I try to install with apt. Even librealsense-examples can't be found. I was hoping I'd be able to find them somewhere but I've had no luck. I noticed you can get them for ROS still but not linux.
Okay that's more or less what I thought, thanks for the info.
We are checking with the RealSense team on why those files cannot be downloaded.
Can you send us some screenshots of the error?
We re-ran the instructions in https://software.intel.com/sites/products/realsense/intro/getting_started.html and everything worked.
You should run all the steps in the section "Installation Instructions" beginning at "Step 1: Setting up the repository."