There is a difference in the version....the difference comes in the amount of bandwidth that the cables can carry....below is a breif passage on the difference between the versions
Each subsequent version of the specification uses the same cables, but increases the throughput and/or capabilities of what can be transmitted over the cable. For example, previously, the maximum pixel clock rate of the interface was 165 MHz, sufficient for supporting 1080p at 60 Hz or WUXGA (1920x1200) at 60 Hz, but HDMI 1.3 increased that to 340 MHz, providing support for WQXGA (2560x1600) and beyond across a single digital link. See also: HDMI Versions.
HDMI also includes support for 8-channel uncompressed digital audio at 192 kHz sample rate with 24 bits/sample as well as any compressed stream such as Dolby Digital, or DTS. HDMI supports up to 8 channels of one-bit audio, such as that used on Super Audio CDs at rates up to 4x that used by Super Audio CD. With version 1.3, HDMI now also supports lossless compressed streams such as Dolby TrueHD and DTS-HD Master Audio
With all these spec versions around, and equipment and cables having been designed and tested in accordance with one version or another of the spec, it's natural that people worry about the compatibility of equipment and cables. Device compatibility is a complicated subject and is really outside our area of expertise, but when it comes to cables, we can give some reassurance. The basic characteristics of HDMI cables have not changed from one spec version to another. They have the same conductors, in the same configuration, wired to the connector in the same manner.
What this means is that, in terms of supporting features and protocols (e.g., HDCP), all HDMI cables have been designed to the same basic standard, whether they were designed under 1.1 or 1.3a or anything in between, and whether they were tested under CTS 1.1, 1.3b1, or anything in between. A 1.1 certified cable may not be officially (or actually) 1.3 "compliant" in the sense of having passed testing under the 1.3 standards, but it will always be 1.3 compatible, in the sense that it is built to handle the same job, and has all the necessary parts, for 1.3.