| http://www.w3.org/ns/prov#value | - I am 100% sure there are two versions.There is a link at the bottom right of [this page](https://www.adobe.com/products/photoshop-lightroom.html?promoid=KLXLX) to add LR 6 to your cart, from which point there is the option to buy or upgrade.I do not know whether there is a trial version.
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