I bought standalone Lightroom (version 5.0) in 2013. Until now I had free updates for my product (latest is 5.7). The new version of Lightroom is also free upgrade for me or I must change to the subscription service version?
No you have to pay to upgrade a major version. When you select to buy the product, click edit at the checkout screen, select 'Upgrade' instead of 'Full'. Its USD79
Marc, thank you for your answer.
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