Last DisplayPort standard was updated in September, 2014. Then the version number of the specification 1.3 was published. An important innovation has been to increase the bandwidth for each port line up to 8.1 Gbit / s, which together can transfer data on the interface (on four lines) at a rate of up to 32.4 Gbit / s. This was 50% more than in the case with the previous version of the standard and has allowed to connect the interface DisplayPort monitors at resolutions up to 5K. At the same time it has been implemented the ability to transmit DisplayPort protocol for the USB interface as a part of the port USB Type-C. Updated today DisplayPort specification version 1.4 extend the capabilities of the standard, although the transfer rate without compression remained at the same level.
Performance DisplayPort standard in version 1.4 will increase due to the use of data compression with a ratio of 3: 1, which will provide Display Stream Compression 1.2 technology. Due to this, it will be able to output video at resolutions up to 8Kp a frame rate of 60 Hz or 4Kp with a frequency of 120 Hz. Also be possible to transfer data at USB 3.0 (SuperSpeed ??USB) protocol, using the monitor port for connecting USB Type-C, and guaranteed support for high dynamic range images (High Dynamic Range, HDR).
The main innovation was the support of FEC (Forward Error Correction), which is imposed on transport Display Stream Compression 1.2; support meta transport HDR, which uses an additional channel for the transmission of data on an extended dynamic range image (conformance CTA 861.3, realized in the HDMI 2.0a protocol); and expansion of the audio transport. Sound can be also transmitted over DisplayPort interface, which uses the free line or packet data. The new version of the standard allowed the organization to 32 channels of audio with a sampling frequency of 1536 kHz.