This release appears to be identical, disc-wise, to what was included in volume one of the Columbia Classics 4K boxed set, and the Blu-ray is identical to the discs included in that 2012 release.
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From the specs, LOA appears to be identical to what was included in the Columbia Classics Vol 1 set, but River Kwai is a new encode and newly authored disc (at least on 4K), as the previous stand alone release did not include Dolby Vision HDR.